Isotropic Damage Model (Plane Stress)

版本 1.0.5 (1.7 KB) 作者: Ayad Al-Rumaithi
Isotropic damage model in 2D plane stress problems
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function [Material_State2,D_crco]=Isotropic_Damage_Model(Material,Material_State,e)
Input:
--------
Material: A variable containing material properties Material.E (modulus of elasticity), Material.v (poisson ratio), Material.f_t (tensile strength) and Material.g_f (fracture energy divided by element size)
Material_State: A history variable containing material state variables at previous increment or iteration. it includes Material_State.s (stress vector) , Material_State.e (strain vector),Material_State.e_eq (equivalent strain) ,Material_State.k (hardening parameter) and Material_State.d (damage)
Initial values for these history variables should be zeros
IMPORTANT: for this model, this variable should be called from the last converged state of material ((i.e. end of previous increment not from the last iteration) in order to avoid spurious unloading. See Section 6.2 in Crisfrield book [1]
e: Strain vector in the current iteration.
Output:
-----------
Material_State2: A history variable containing material state variables at current iteration
D_crco: Tangent constitutive matrix
References:
----------------
[1] Crisfield, Michael A. Non-linear finite element analysis of solids and structures. Vol. 1. Wiley, 1993.

引用格式

Ayad Al-Rumaithi (2025). Isotropic Damage Model (Plane Stress) (https://ww2.mathworks.cn/matlabcentral/fileexchange/70304-isotropic-damage-model-plane-stress), MATLAB Central File Exchange. 检索时间: .

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