Traditional computer aided tolerancing method could not accomplish the tolerancing and variation simulation well in composite assembly. The paper presents a clamping force integrated computer aided tolerancing method for composite assembly. The stochastic variations and the stackup of variations are affected by clamping forces. The clamping force modified probability distribution is used to represent the modification based on the verified FEA model of the composite assembly. The clamping forces are coordinated based on the main deformation mode extracted by the principal component analysis to satisfy the coaxial tolerance requirements of the composite assembly. The assembly of an aircraft composite elevator is considered to illustrate the computational aspects of the proposed methods. The computer aided tolerancing method involving clamping forces outlined in the paper is found to be effective for composite assembly.

中文翻译：

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复合材料装配中的夹紧力集成计算机辅助公差

传统的计算机辅助公差方法不能很好地完成复合装配中的公差和变异模拟。本文提出了一种用于复合材料装配的夹紧力集成计算机辅助公差测量方法。随机变化和变化的叠加受夹紧力的影响。夹紧力修正概率分布用于表示基于验证的复合组件有限元分析模型的修正。根据主成分分析提取的主要变形模式协调夹紧力，以满足复合组件的同轴公差要求。飞机复合电梯的组装被认为是为了说明所提出方法的计算方面。