/FAIL/PUCK - Puck Composite Failure Model
Description
Describes the Puck failure model.
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/FAIL/PUCK/mat_ID/unit_ID |
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p+12 |
p-12 |
p-22 |
Ifail_sh |
Ifail_so |
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fail_ID |
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Strength () are taken from following tests. m1 is fiber direction. #RADIOSS STARTER #---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----| /UNIT/1 unit for mat and failure # MUNIT LUNIT TUNIT g mm ms #---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----| #- 1. MATERIALS: #---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----| /MAT/COMPSH/1/1 composite example # RHO_I .0015 # E11 E22 NU12 Iform E33 114000 9650 .025 0 0 # G12 G23 G31 EPS_f1 EPS_f2 6000 6000 6000 0 0 # EPS_t1 EPS_m1 EPS_t2 EPS_m2 dmax 0 0 0 0 0 # Wpmax Wpref Ioff ratio 0 0 4 0 # b n fmax 0 0 0 # sig_1yt sig_2yt sig_1yc sig_2yc alpha 1E30 1E30 1E30 1E30 0 # sig_12yc sig_12yt c_12 Eps_rate_0 ICC 1E30 1E30 0 0 0 # GAMMA_ini GAMMA_max d3max 0 0 0 # Fsmooth Fcut 0 0 /FAIL/PUCK/1/1 # Sigma1_T Sigma2_T Sigma_12 Sigma1_C Sigma2_C 1720 55.2 103 765 503 # P+12 P-12 P-22 Tau_max Ifail_sh Ifail_so 0 0 0 .005 1 0 #---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----| #enddata #---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----| |
Tensile fiber failure mode: Compressive fiber failure mode:
Mode A if : Mode C if : Mode B If the damage parameter is ef > 1.0, the stresses are decreased by using an exponential function to avoid numerical instabilities. A relaxation technique is used by decreasing the stress gradually: With, Where, t is the time, tr is the start time of relaxation when the damage criteria is assumed, is the time of dynamic relaxation, is the stress components at the beginning of damage.
with . This damage value shows with /ANIM/BRICK/DAMA or /ANIM/SHELL/DAMA.
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