SDC Verifier

Custom Standard

Standard is set of checks and items to perform calculations according to user defined formulas. It is possible to use model data (material, properties), results (stresses, forces) and also additional user defined characteristics in formulas.

To add Custom Check execute Standard - Custom from main menu. Alternatively use Standard context menu.

Standard contains:

Constants

Constants is a static value which can be used in checks with help of Alias. It is useful to create constants and use them in formulas because in case of modifications (related to constants) it is required to make change in one place only.

Constant dialog box:

Types

Standard type is a list of titles that can be used in classification or characteristic instead of numbers. To add a new type press Add from the menu:

The following dialog window will be displayed:

- add a new item;

- edit the selected item;

- remove the selected item;

Import from other standard - import already existing classification type from existing standards:

Select standard, standard type and press OK to create new standard type.

Copy to standard - export already existing standard type to the existing standards:

 

Characteristics

SDC Verifier allows to add extra properties called Characteristics to use them in Standard check formulas. There are five types of characteristics: Material, Property, Node, Element, Linked and Loads.

To add Characteristics use Characteristics context menu:

All characteristic types except Linked can be created by additional sub types that are taken from Types list.

Numeric type - set direct value to the interested elements.

Add Material/Property Characteristic:

Set Alias to use characteristic in check formulas.

To plot characteristic values press .

Material Type characteristic. Set by names for more convenient displaying. Names are taken from Types

Add Node/Element characteristic:

- add Node/Element group and set its value:

- edit group elements and value;

- copy selected groups with values;

- remove selected groups;

- preview highlight selected group nodes/elements;

- plot characteristic values of selected groups;

- colored plot with ID label of selected groups;

- colored plot with Value label of selected groups;

Note: Import is available for element type characteristic only.

Press Import to import Beam Length/Effective Length Factor from Beam Member Finder, Plate Width/Length from Panel Finder or Welds from Weld Finder.

Import removes all previous data from characteristic:

Import dialog box:

If Beam Member data is selected then it is required to select the direction from the list:

Note: For weld finders only groups with 0 values will be created.

Classification

Classification is an extra elements characteristic that can be set over directions.

To add classification select type in classification Add menu item:

Numeric classification - is a numeric elements characteristic. It is flexible as it can be used in creation of any kind of own calculations. It is available for all types of standards. Extra classifications are possible to be created using Types. Different standards have their own predefined classifications. For example DIN 15018 Standard predefined classifications are: Element group, Weld Type and Material Type.

Set classification Alias to use it in Custom check formulas.

- add classification condition;

- edit selected condition;

- copy selected conditions;

- remove selected conditions;

- move selected conditions up;

- move selected conditions down.

Note: First condition cannot be modified, moved, copied or removed.

- highlight selected condition elements;

Press Plot to display values for selected direction.

Note: Values are calculated condition by condition. If the same element is a part of different conditions - last condition value is taken. If element do not belong to any condition - value from fist condition is taken.

- add list of conditions with empty classification (one weld one condition) from Weld Finder tool to the list.

Classification Condition

Classification condition is applied to the selected directions of the selected elements.

Define Selection to be used in condition.

One condition - set the value to the selected directions;

Multiple conditions - select the value for each direction separately. The directions with the same values will be grouped in one condition. Other values will form different conditions.

Use All, None, X/Y/XY buttons to operate with selected directions.

Standard Tables

Standard table is a two dimensional matrix of static values.

To add Standard Table press Add in Standard Tables context menu:

The following window for parameters setting will be displayed:

Set table Alias to use it in Custom check formulas.

Set count of rows and columns and press Apply to build the table.

Paste full table – paste full table from clipboard.

Paste cell values – paste values from clipboard to cells starting from top left selected cell.

Note: To cut the table set less value for row or column count.

Alias

Alias is a unique name for Standard items through which they can be accessed in Custom check formulas.

Note: Alias can contain on letters, digits and underscore symbol ("_"). Alias is unique inside the standard and must be different from the model and result variables such as (Area, Yield, S, Abs etc.).

Custom Checks

Custom Check

Custom Check is used in SDC Verifier to perform any user defined calculations. Custom Check consists of Parameters - formulas are made up of model variables, constants and mathematical operations, results and functions.

There are 4 predefined checks: Static Stress Check, Plate Average Stress, Plate Principal Stresses and Solid Principal Stresses.

To create Custom Check execute Add - Custom Check in Checks context menu:

Check Alias - check title to access it from other checks.

Check Calculate Results over Directions (for X, Y, Z, XY, YZ, ZX, Equivalent, Overall directions), otherwise one direction is calculated.

Check Calculate Results over Points (for all element's points of interest), otherwise one point is calculated.

On Selection (by default all entities) you can define necessary entities.

Note: Calculate Results over Directions and Calculate Results over Points should be defined before first parameter selected.

Load calculation can be calculated on All Loads or on Load Groups only.

If All Loads option is used then Load Group is calculated as envelope (like in Job), formulas are calculated for Individual Loads, Load Sets but Load Group is min/max/abs among its items.

If Load Groups option is used then formulas are based on group results, e.g. min/max/abs can be used for stresses, strains, line element force and plane element force.

Press to edit multiple parameters (parameters/replacement, category and limits).

To add Parameter to the Custom Check press .  For each parameter the Title and Alias must be defined. The Alias is a short name of the Parameter to be used in the formulas and must fill the requirements for the variables names - they can contain only letters and digits and underscore.

Replacement - means outcome is intermediate and not stored. The purpose of the replacement is to be used in other parameters from current check and don't consume memory.

It is possible to create separate formulas for each direction. One formula will be used for all directions if it is inputted into the All Directions text field.

If the formula of a parameter contains logic operations, then the result will be 1 if the condition is fulfilled, else 0 will be assigned to the parameter value.

Note: Formulas in SDC Verifier are case insensitive.

Entities in the Main Functions Toolbox contains the most important functions containing sqrt(), max(),power(), average(), etc.

All available variables of formulas are collected in the Items Toolbox

Mathematical Operations;

Material Variables (contains characteristics, namely Young modulus, Poisson ratio, mass density, shear modulus, yield limit and tensile strength);

Property Variables ((contains the characteristics of the Property, such as area for beam type element, thickness for plate element, Cross Section Dimensions etc.);

Results from other checks;

Constants from Standard;

Characteristic;

Classifications;

Standard Tables;

Inner Constants (Property Shapes, Yes, No, etc.);

Local Check (contains Parameters already defined in the current Check);

Check Parameter.

- Other variables (beam member, shape, load, cycles.

Limits is used to highlight parameters if it exceeds limit value.

Category defines how parameter will be represented in the table (Number Format) and what Legend Settings will be applied.

E.g. Utilization Factor by default has general format with 2 digits after dot:

Adding Items

To add necessary item (all except Results and Check Parameters) press corresponded button on Items dialog box. The dialog window appears:

To Add Check Parameter press . The dialog window appears. In Directions list All is available if current check is calculated on directions. In Points of Interests list All is available if current check is calculated on points of interests.

To Add Result press . The dialog window appears. In Directions list All is available if current check is calculated on directions. In Points of Interests list All is available if current check is calculated on points of interests.

Once the Parameter is created it can be either edited or removed.

To Edit Parameter press . The dialog box appears where you can select necessary parameter to edit.

To Delete Parameter press . On the appeared dialog you can define necessary parameter to remove and press .

Press to move parameters

Warning:

If formula contains items that do not exist for certain element types (e.g. area does not exist for beams) then the formula will be evaluated with such items replaced with zero.

Check Results:

Expand table;

Extreme table;

Criteria Plot;

Contour Plot;

Components Extreme Table;

Flow Table Extreme.

Clear Result - remove all check results.

Custom check (no load).

Custom check (no load) is a sub-type of Custom Check. Check supports variables that are not based on loads (young modulus, yield stress, property area, moment of inertia, classification, characteristic, standard table, constants etc.).

Calculate Results over Directions - optional;

Calculate Results over Points - disabled;

Load Calculation - disabled;

Selection - optional;

Property check

Property check is a sub-type of Custom Check. Check supports variables of materials, properties, constants, standard tables. Results are calculated over properties.

Calculate Results over Directions - disabled;

Calculate Results over Points - disabled;

Load Calculation - disabled;

Selection - disabled;

Plate Buckling

The Plate Buckling is used to perform plate buckling calculations with user defined formulas.

It is very similar to the Custom Check. The major difference is that it is calculated on section and results presented for the Sections and Plates. Parameters of plate buckling are calculating only for one direction and can use additional variables in formulas: Element Stress (Minimum compression or average) converted into plate direction and Plate dimensions.

To create Plate Buckling check execute Add - Plate Buckling in Checks context menu:

Plate Buckling:

By default all sections are selected to be checked. Press to change Selection.

Press to edit multiple parameters (parameters/replacement types, category and limits).

To add Parameter press . For each parameter the Title and Alias must be defined. The Alias is a short name of the Parameter to be used in other formulas and must fill the requirements for the variables names - they can contain only letters and digits and underscore.

Replacement - means outcome is intermediate and not stored. The purpose of replacement is to be used in other parameters for current check but the result is not important for the user.

Adding Items

Entities in the Main Functions Toolbox contains the most important functions containing sqrt(), max(),power(), average(), etc.

All available variables of formulas are collected in the Items Toolbox

Mathematical Operations;

Material Variables (contains characteristics, namely Young modulus, Poisson ratio, mass density, shear modulus, yield limit and tensile strength);

Property Variables (contains the characteristics of the Property, such as area for beam type element, thickness for plate element, Cross Section Dimensions etc.);

Results from plates;

Constants from Standard;

Classifications;

Standard Tables;

Characteristic;

Inner Constants (Property Shapes, Yes, No, etc.);

Local Check (contains Parameters already defined in the current Custom Check);

Check Parameter.

Parameters from other checks (of same type) created before.

Limits is used to highlight parameters if it exceeds limit value.

Category defines how parameter will be represented in table (Number Format ) and what Legend Settings will be applied.

To Edit Parameter press . The dialog box appears where you can select necessary parameter to edit.

To Delete Parameter press . On the appeared dialog you can select necessary parameter to remove and press .

Press to move parameters

Expand table;

Extreme table;

Criteria Plot;

Clear Result - remove all check results.

Available Variables:

  • Functions;
  • Check Variables;
  • Material Variables;
  • Property Variables;
  • Functions

    Variable Value
    sqrt() Returns the square root of a specified number.
    pow(,) Returns a specified number raised to the specified power. E.g. Pow(10,2)=100
    root(,) Returns root of specified number of specified power. E.g. root(-1000, 3)=-10
    min(,) Returns smaller among specified numbers.
    max (,) Returns bigger among specified numbers.
    absma x(,) Returns the absolute maximum value among specified numbers.
    average(,) Returns the average value among specified numbers. E.g. Average(1,2,3)=2.
    if(,,) If(condition, TrueExpression, FalseExpression).If condition is true then TrueExpression is executer, otherwise FalseExpression.
    switch(,,) Returns switch(type, t1, expression1, .., tN, expressionN).If type = t1 then expression1 is executed.
    exp() Returns e raised to the specified power.
    abs() Returns the absolute value of a specified number.
    sin() Returns the sine of the specified angle.
    cos() Returns the cosine of the specified angle.
    tan() Returns the tangent of the specified angle.
    log() Returns the natural (base e) logarithm of a specified number.
    round() Rounds a value to the nearest integer or specified number of decimal places.
    sign() Returns a value indicating the sign of a number.
    sinh() Returns the hyperbolic sine of the specified angle.
    cosh() Returns the hyperbolic cosine of the specified angle.
    tanh() Returns the hyperbolic tangent of the specified angle.
    asin() Returns the angle whose sine is the specified number.
    acos() Returns the angle whose cosine is the specified number.
    atan() Returns the angle whose tangent is the specified number.
    atan2(,) Returns the angle whose tangent is the quotient of two specified numbers.
    PI Mathematical Constant = 3.14159.

    Material Variables

    Name Description
    young Young Modulus
    poisson Poisson Ratio
    shearm Shear Modulus
    shear Shear
    mdensity Mass Density
    tensile Tensile Strength
    yield Yield Stress

    Property Variables

    Name Description
    area Area
    nsm Nonstructural mass
    torsional Torsional Constant
    perimeter Perimeter
    coeff Coefficient for Torsional Stress
    tension InitialTension
    slack Initial Slack
    allow_stress Allowable Tensile Stress
    area_inertia Area Moment of Inertia
    inner Inner Diametr
    outer Outer Diametr
    pressure Internal Pressure
    izz Moment of Inertia, Izz
    iyy Moment of Inertia, Iyy
    izy Moment of Inertia, Izy
    yshear Y Shear Area
    zshear Z Shear Area
    warping Warping Constrant
    yneutral Y Neutral Axis Offset
    zneutral Z Neutral Axis Offset
    t1 Thickness 1
    t2 Thickness 2
    t3 Thickness 3
    t4 Thickness 4
    topfiber Top Fiber
    botfiber Bottom Fiber
    tshear TShear/Mem Thickness
    stiff Bend Stiffness
    DIM1 Cross section Dimension1 (or Height or Radius)
    DIM2 Cross section Dimension2 (or Weight)
    DIM3 Cross section Dimension3 (or Weight2)
    DIM4 Cross section Dimension42 (or Thickness1)
    DIM5 Cross section Dimension5 (or Thickness2)
    DIM6 Cross section Dimension6 (or Thickness)
    H Cross section Height
    R Cross section Radius
    W1 Cross section Width 1
    W2 Cross section Width 2
    TH1 Cross section Thickness 1
    TH2 Cross section Thickness 2
    T Cross section Thickness
    Shape Property Cross Section Shape
    stiffened_type Get cross section stiffened type = {stiffened, unstiffened, combined}
    WebThickness Get Section Web Thickness
    WebWidth Get Section Web Width
    WebWidth_NoFlanges Get Section Web Width between flanges (minus flanges thicknesses)
    WebArea Get Section Web Area
    FlangeTopThickness Get Section top flange thickness
    FlangeBottomThickness Get Section bottom flange thickness
    SDCSectionType Get Section SDC Type (I,C,L,T, box or circle)
    FlangeTopWidth Get Section top flange width
    FlangeBottomWidth Get Section bottom flange width
    ShapeYOrientation Get Section Y Axis Orientation (Left, Right, Up or Down)
    Cbot_Major Get distance from bottom to neutral line for major axis
    Cbot_Minor Get distance from bottom to neutral line for minor axis
    Ctop_Major Get distance from top to neutral line for major axis
    Ctop_Minor Get distance from top to neutral line for minor axis
    VerticalAxis Get Vertical Axis (Y or Z axis oriented up and down in section)
    Double_Symmetric Get if shape is double symmetric
    Section_Height Get overall section height (calculated by SDC using point of interests)
    Section_Width Get overall section width (calculated by SDC using point of interests)
    Imin Principal Minimum Moment of Inertia, Imin
    Imax Principal Max Moment of Inertia, Imax
    PrincipleAngle Princple Angle
    yc_top Distance from centroid to the top fibre (along y axis)
    yc_bot Distance from centroid to the bottom fibre (along y axis)
    yc_min Min distance from centroid to the fibre (along y axis)
    yc_max Max distance from centroid to the fibre (along y axis)
    zc_top Distance from centroid to the top fibre (along z axis)
    zc_bot Distance from centroid to the bottom fibre (along z axis)
    zc_min Min distance from centroid to the fibre (along z axis)
    zc_max Max distance from centroid to the fibre (along z axis)
    shapeydistance Shape distance from bottom/left to the top/right (along y axis)
    shapezdistance Shape distance from bottom/left to the top/right (along z axis)

    Other Variables

    Variable Value
    MemberY.L Length in Y direction (from Beam Member Finder)
    MemberY.K Effective Length Factor in Y direction (from Beam Member Finder)
    MemberY.CmType Cm Type in Y direction (from Beam Member Finder)
    MemberZ.L Length in Z direction (from Beam Member Finder)
    MemberZ.K Effective Length Factor in Z direction (from Beam Member Finder)
    MemberZ.CmType Cm Type in Z direction (from Beam Member Finder)
    MemberTorsion.L Length in torsional direction (from Beam Member Finder)
    MemberTorsion.K Effective Length Factor in torsional direction (from Beam Member Finder)
    MemberTorsion.CmType Cm Type in torsional direction (from Beam Member Finder)
    ShapeCircularTube.D Diameter
    ShapeCircularTube.Dinner Diamter - 2 * thicknesses
    ShapeCircularTube.R Radius
    ShapeCircularTube.RinnerRadius - thickness
    ShapeCircularTube.T Thickness
    ShapeCircularTube.ZY Plastic Section Modulus in Y direction
    ShapeCircularTube.ZZ Plastic Section Modulus in Z direction
    ShapeRectangularTube.H Height (Rectangular Tube)
    ShapeRectangularTube.Hw Height - 2 * thicknesses
    ShapeRectangularTube.B Width
    ShapeRectangularTube.TVertical Vertical side thickness
    ShapeRectangularTube.THorizontal Horizontal side thickness
    ShapeRectangularTube.TLeft Left side thickness
    ShapeRectangularTube.TRight Right side thickness
    ShapeRectangularTube.TTop Top side thickness
    ShapeRectangularTube.TBottom Bottom side thickness
    ShapeRectangularTube.ZY Plastic Section Modulus in Y direction
    ShapeRectangularTube.ZZ Plastic Section Modulus in Z direction
    ShapeC.H Height (Channel)
    ShapeC.Hw Height - 2 * thicknesses
    ShapeC.BMin Min Width {Top, Bottom}
    ShapeC.BTop Top Width
    ShapeC.BBottom Bottom Width
    ShapeC.TWeb Web Thickness
    ShapeC.TFlangeMin Min Flange Thickness {Top, Bottom}
    ShapeC.TFlangeTop Flange Top Thickness
    ShapeC.TFlangeBottom Flange Bottom Thickness
    ShapeC.ZY Plastic Section Modulus in Y direction
    ShapeC.ZZ Plastic Section Modulus in Z direction
    ShapeI.H Height (I-beam)
    ShapeI.Hw Height - 2 * thicknesses
    ShapeI.BMin Min Width {Top, Bottom}
    ShapeI.BTop Top Width
    ShapeI.BBottom Bottom Width
    ShapeI.TWeb Web Thickness
    ShapeI.TFlangeMin Min Flange Thickness {Top, Bottom}
    ShapeI.TFlangeTop Flange Top Thickness
    ShapeI.TFlangeBottom Flange Bottom Thickness
    ShapeI.HBRatio Height / Width
    ShapeI.ZY Plastic Section Modulus in Y direction
    ShapeI.ZZ Plastic Section Modulus in Z direction
    ShapeT.HFull height (T-beam)
    ShapeT.BWidth (T-beam)
    ShapeT.TwebWeb thickness (height)
    ShapeT.TflangeFlange thickness (width)
    ShapeT.Y0Centroid Y
    ShapeT.Z0Centroid Z
    ShapeL.HHeight - bigger leg (L-beam)
    ShapeL.BWidth - smaller leg (L-beam)
    ShapeL.ThThickness of bigger leg
    ShapeL.TbThickness of smaller leg
    ShapeL.Y0Centroid Y
    ShapeL.Z0Centroid Z
    Load.Sf Load Safety Factor