原文传递
Effect of Stochastically Varying Creep Parameters on Residual Stresses in Ceramic Matrix Composites.
| 题名： | Effect of Stochastically Varying Creep Parameters on Residual Stresses in Ceramic Matrix Composites. |
| 作者： | Pineda, E. J.; Mital, S. K.; Bednarcyk, B. A.; Arnold, S. M. |
| 关键词： | Residual stress, Ceramic matrix composites, Creep properties, Stochastic processes, Laminates, Thermal expansion, Relaxation (mechanics), Dependence, Statistical analysis, Computational mechanics, Micromechanics, Monte carlo method |
| 摘要： | Constituent properties, along with volume fraction, have a first order effect on the microscale fields within a composite material and influence the macroscopic response. Therefore, there is a need to assess the significance of stochastic variation in the constituent properties of composites at the higher scales. The effect of variability in the parameters controlling the time-dependent behavior, in a unidirectional SCS-6 SiC fiber-reinforced RBSN matrix composite lamina, on the residual stresses induced during processing is investigated numerically. The generalized method of cells micromechanics theory is utilized to model the ceramic matrix composite lamina using a repeating unit cell. The primary creep phases of the constituents are approximated using a Norton-Bailey, steady state, power law creep model. The effect of residual stresses on the proportional limit stress and strain to failure of the composite is demonstrated. Monte Carlo simulations were conducted using a normal distribution for the power law parameters and the resulting residual stress distributions were predicted. |
| 总页数： | Pineda, E. J.; Mital, S. K.; Bednarcyk, B. A.; Arnold, S. M. |
| 报告类型： | 科技报告 |
相关文献
- Tensile Properties and Fatigue Behavior of Geopolymer Matrix Composites with Carbon Fiber Reinforcement at Elevated Temperature.
- Use of Fiber-Reinforced Polymer-Matrix Composites in Army Ground Vehicles.
- CREEP OF NEXTEL 720/A CERAMIC MATRIX COMPOSITE WITH LASER DRILLED EFFUSION HOLES AT 1200C IN AIR AND IN STEAM.
- The Use of Fiber-Reinforced Polymer-Matrix Composites in Army Ground Vehicles
- FEAMAC/CARES Stochastic-Strength-Based Damage Simulation Tool for Ceramic Matrix Composites.
检索历史
应用推荐
