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why interpolate density with theta (the projected design variable)?
Posted 2024/02/29 21:32 GMT-5 Geometry, Structural Mechanics Version 6.1 1 Reply
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In this example: https://www.comsol.com/model/topology-optimization-of-an-mbb-beam-7428
It adopted 2 times of interpolation with different design variables theta and theta_p.
Interpolate the density using theta (the design variable after projection):
Interpolate the material property (Young's modulus) using theta_p:
As shown follows
Density rho root.comp1.dtopo1.theta*(7850[kg/m^3]) kg/m³ Basic
Young's modulus E root.comp1.dtopo1.theta_p*(E(T)) Pa Young's modulus and Poisson's ratio
Why do we interpolate the density using theta?