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首页> 外文会议>International Conference on Mechanical Engineering and Mechanics vol.2; 20051026-28; Nanjing(CN) >The Residual Stresses and Strains in the Composite Material Barrel
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The Residual Stresses and Strains in the Composite Material Barrel

机译：复合材料筒体中的残余应力和应变

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摘要

This paper aims at establishing a model to calculate the residual stresses and strains in the composite material barrel and analyzing the effect of some factors such as the volume fractions of the composites, the change of the temperature during the curing process, the fiber tension and the winding angles during the winding process. The lay-by-lay modelling technique which is better than other theories applied in the composite material structures is used in the model. Raissner-correction theory which is based on the Kirchhoff-Love suppose is used to calculate the thermal residual stresses and strains, and at the same time the winding angles and the volume fractions of the composite material structures are also considered. According to the theory of cylinder shell, the model gives a set of formulations to compute the residual stresses and strains caused by the winding tension and the tension-decrease change during the manufacturing process. A computer program is developed to simulate the residual stresses and strains in the composite material barrel, and the flow charts are also given. According to the values of the residual stresses and strains, we can select reasonable operating conditions and working parameters during the manufacturing process to improve the strength of the composite material barrel.
机译：本文旨在建立一个模型来计算复合材料筒体中的残余应力和应变，并分析诸如复合材料的体积分数，固化过程中的温度变化，纤维张力和纤维强度等因素的影响。缠绕过程中的缠绕角度。在模型中使用了比在复合材料结构中应用的其他理论更好的逐层建模技术。基于Kirchhoff-Love假设的Raissner校正理论用于计算热残余应力和应变，同时还考虑了复合材料结构的缠绕角和体积分数。根据气缸壳理论，该模型给出了一组公式，用于计算制造过程中绕组张力和张力减小变化所引起的残余应力和应变。开发了计算机程序来模拟复合材料料筒中的残余应力和应变，并给出了流程图。根据残余应力和应变的值，我们可以在制造过程中选择合理的工作条件和工作参数，以提高复合材料筒体的强度。

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