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估算了石墨增强铝立体结构材料的热变形值,并与石墨/环氧的性能进行了比较。材料的热传导系数和热膨胀系数可预测材料的最终形变。该研究中引入了总热变形系数(TTDC)的概念,以实现最小热变形的叠层结构形式的优化。为了得到最小的热变形性能,可利用由TTDC参数得出的优化叠层结构的参数设计曲线,而不需要材料具备类各向同性的特点。有重叠角(±θ)的石墨/铝金属基叠层材料表现出的最小TTDC值是常数,所以要求设计者们在没有热变形损耗的情况下能满足材料刚性和强度的要求。提出的设计方法是利用TTDC系数优化材料的机械性能,使其具有最小的热变形。
The thermal deformation values of graphite reinforced aluminum 3D structural materials were estimated and compared with those of graphite / epoxy. The material’s thermal conductivity and thermal expansion coefficient predict the final deformation of the material. The concept of Total Thermal Deformation Factor (TTDC) was introduced in this study to optimize the form of laminated structure with minimal thermal deformation. In order to obtain the minimum thermal deformation performance, the parameter design curve of the optimized laminated structure obtained from the TTDC parameters can be utilized without the need for the material to be isotropic-like. Graphite / aluminum metal-based laminates with overlapping angles (± θ) exhibit a constant minimum TTDC value and therefore require designers to meet the material stiffness and strength requirements without thermal deformation losses. The proposed design approach is to use TTDC coefficients to optimize the mechanical properties of the material so that it has minimal thermal deformation.