Material Object

Material object holds material property information for the structure.
Examples of these properties are modulus of elasticity, Poisson's ratio, density, steel yield strength, 28-day strength of concrete.

Example Syntax:

...
<O T="Material">
...
...
</O>

Example:

<O N="MaterialObject1" T="Project" Category="FEM Objects" TransAlignRule="Right">
    <!-- created by ParamML Examples on 06.02.2023 -->
    <O N="Rebar3D" T="Line">
        <O T="Point" X="0" Y="0" Z="0" />
        <O T="Point" X="0" Y="0" Z="100" />
        <O N="Section" T="Section">
            <O T="Shape">
                <O T="Circle" Radius="5" />
            </O>
        </O>
        <O N="StructuralSteel_A36" T="Material">
            <P N="E" V="200000" D="modulus of elasticity" />
            <P N="G" V="83333" D="shear modulus" />
            <P N="Fu" V="400" D="specified minimum tensile strength" />
            <P N="Fy" V="248" D="specified minimum yield stress" />
        </O>
    </O>
</O>

Debug Trace

To view this example in the library, see (OpenBrIM Platform)

Example:

To use material values saved in the OpenBrIM library , follow these steps:

Open a saved project from the OpenBrIM App.
Click on the Data , then navigate to Materials under FEA in the combobox.
In the 3rd line, click on the 3 dots, then select the "import material" button in the combobox.
Choose the desired material components.
Import the information.
Navigte to the Source Code.

OpenBrIM App

The code rows in the red frame in the figure are copied from the Source Code and transferred to the library object for processing

<O N="MaterialObject2" T="Project" Category="FEM Objects" TransAlignRule="Right">
    <!-- created by ParamML Examples on 07.02.2023 -->
    <O N="Fc_4ksi" T="Material">
        <P N="E" V="3986.54846" UT="Stress" UC="Property" />
        <P N="G" V="1661.06185819275" UT="Stress" UC="Property" />
        <P N="d" V="0.0000868055" UT="Density" UC="Property" />
        <P N="a" V="0.000006" D="Alpha: The coefficient of thermal expansion property of the material." />
        <P N="Type" V="Concrete" T="Text" D="Type: The material type [Steel=steel/Concrete=concrete/Reinforcement Bar=rebar/Prestressing Tendon=prestress]." />
        <P N="Fc28" V="4" UT="Stress" UC="Property" />
        <P N="f_cm" V="5.16" UT="Stress" UC="Property" />
    </O>
    <O N="Fc_3ksi" T="Material">
        <P N="E" V="3625.494616" UT="Stress" UC="Property" />
        <P N="G" V="1510.62275685933" UT="Stress" UC="Property" />
        <P N="d" V="0.0000868055" UT="Density" UC="Property" />
        <P N="a" V="0.000006" D="Alpha: The coefficient of thermal expansion property of the material." />
        <P N="Type" V="Concrete" T="Text" D="Type: The material type [Steel=steel/Concrete=concrete/Reinforcement Bar=rebar/Prestressing Tendon=prestress]." />
        <P N="Fc28" V="3" UT="Stress" UC="Property" />
        <P N="f_cm" V="4.16" UT="Stress" UC="Property" />
    </O>
</O>

To view this example in the library, see (OpenBrIM Platform)

Parameters of Material Object:

Label	Mandatory	Name and Type Attributes	Default Description and Value Attributes	Other Attributes
Modulus of Elasticity	No	N="E"	D="Modulus of Elasticity" V="0"	Role="Input" UT="Stress" UC="Material"
Poisson Ratio	No	N="Nu"	D="Poisson's Ratio" V="0.2"	Role="Input"
Density	No	N="d"	D="Density" V="0.2"	Role="Input" UT="Density" UC="Material"
Alpha	No	N="a"	D="Coefficient of Thermal Expansion" V="0"	Role="Input"
Steel Yield Stress	Yes	N="Fy"	D="Steel Yield Stress" V="0"	Role="Input" UT="Stress" UC="Material"
Steel Ultimate Stress	Yes	N="Fu"	D="Steel Ultimate Stress" V="0"	Role="Input" UT="Stress" UC="Material"
Concrete 28-day Strength	Yes	N="Fc28"	D="Concrete 28-day Strength" V="0"	Role="Input" UT="Stress" UC="Material"
Type	No	N="Type" T="Text"	D="The Material Type [Steel=steel/Concrete=concrete/Reinforcement Bar=rebar/Prestressing Tendon=prestress]." V="0"	Role="Input"

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