/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 ( #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,
with
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