====Problem Description====
The MSG solid model is used to predict the effective thermoelastic properties of a plain weave composite using a two-step approach. This problem is the example 4.1 in the paper “Liu, X., Yu, W., Gasco, F. and Goodsell, J., 2019. A unified approach for thermoelastic constitutive modeling of composite structures. Composites Part B: Engineering, 172, pp.649-659.” [[BR]]
The first step predicts the effective thermoelastic yarn properties based on the fiber and matrix properties at the microscale. The second step takes the effective yarn properties and matrix properties to predict the effective properties of weave composites. The microscale and mesoscale models are given as [[BR]]
[[Image(yarn.jpg)]] [[BR]]
[[Image(weave.jpg)]] [[BR]]
The fiber and matrix properties are given as [[BR]]
[[Image(ex2t1.jpg)]]  [[BR]]
The youtube video of this problem can be obtained [[BR]]
https://youtu.be/s8LLMRTB-hg [[BR]]

====Software Used==== 
The example will be solved using the TexGen4SC 2.0. 

====Solution Procedure==== 
Below describe the detailed step by step procedure you followed to solve the problem. 

* step1 Create mesoscale plain weave SG with the yarn geometries given as [[BR]]
[[Image(ex1Woven1.jpg)]]
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* step 2 Create plain weave pattern as [[BR]]
[[Image(ex1Woven2.jpg)]]
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* step 3 Go to Homogenization->Microscale and select thermoelastic analysis. Keep the default material properties. The fiber volume fraction 0.64 as [[BR]]
[[Image(ex2Woven3.jpg)]] [[BR]]
Click finish and the microscale homogenization will be performed and the results will be automatically pop up. Note  [[BR]]
[[Image(ex2Woven4.jpg)]]
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* step 4 The effective yarn properties will be automatically assigned to the mesoscale model. However, users need to define the matrix properties for the mesoscale model. Usually, the matrix at the mesoscale is the same as the one at microscale as shown [[BR]]
[[Image(ex2Woven5.jpg)]]
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* step 5 Go to  File->Export->SwiftComp File, define the voxel mesh and run elastic analysis using the MSG solid model [[BR]]
[[Image(ex2Woven6.jpg)]] [[BR]]
Save the sc file and click to the Homogenization->Mesoscale. The effective properties of the plain weave composite will be automatically pop up [[BR]]
[[Image(ex2Woven7.jpg)]] [[BR]]

====References====
 # Liu, X., Yu, W., Gasco, F. and Goodsell, J., 2019. A unified approach for thermoelastic constitutive modeling of composite structures. Composites Part B: Engineering, 172, pp.649-659.