Incremental damage laws applied to design of combustion chambers
Incremental laws for damage evolution present many advantages in terms of thermomechanical modeling. A unique set of material parameters allows for the calculation of monotonic, creep and fatigue failure conditions, as well as anisothermal and tridimensional loadings. A stored energy damage threshold, loading-independent, was introduced to gain this feature. A damage post-processor was implemented in the finite element code Zebulon, and allows for the calculation of lifetimes from the elasto-viscoplastic response of any thermomechanical loading. Validation tests were proposed. Some results are presented for fatigue with hold times, and a validation on a structural thermal test is presented in the last section.
St(e)hane Otin Rodrigue Desmorat Bruno Dambrine
LMT, ENS-Cachan/Univ. Paris 6/CNRS - 61, Av. du Pdt Wilson, 94235 Cachan Cedex-France;SNECMA-Rond po LMT, ENS-Cachan/Univ. Paris 6/CNRS - 61, Av. du Pdt Wilson, 94235 Cachan Cedex-France SNECMA-Rond point Ren(e) Ravaud-R(e)au, 77550 Moissy-Cramayel-France
国际会议
The 5th International Conference on Nonlinear Mechanics(第五届国际非线性力学会议)
上海
英文
221-227
2007-06-11（万方平台首次上网日期，不代表论文的发表时间）