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Static and Dynamic Design Methods for Hybrid Bolted Joints in a Satellite Structure

机译:卫星结构混合螺栓连接的静态和动态设计方法

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A detailed analytical design for hybrid (metal-composite) bolted joints in static and dynamic (random vibrations) analysis is presented in this paper. Due to the fact that a space structure must be lighter and stiffened, the joints design represents an important aspect in the overall mass-stiffness optimization process of the structure. The hybrid joint studied represents the attachment between a real space thruster bracket structure made from aluminum alloy and a composite spacecraft platform subjected to quasi-static and dynamic loads. These computing techniques, originally designed for metal joints, were translated to hybrid metal-composite joints using the finite element method (FEM). As a result, using the FEM technique, the design methods proposed have validated the ability to incorporate and describe in detail the effects of important phenomena such as clamping, friction, clearance and secondary bending of the joint, which are complex three-dimensional phenomena of major importance in the design process of a hybrid joint.
机译:本文提出了混合(金属复合材料)螺栓连接的静态和动态(随机振动)分析的详细分析设计。由于空间结构必须更轻且更坚固,因此接头设计代表了结构整体质量刚度优化过程中的重要方面。所研究的混合接头代表了铝合金制成的真实空间推进器支架结构与承受准静态和动态载荷的复合航天器平台之间的连接。这些最初为金属接头设计的计算技术已使用有限元方法(FEM)转换为金属-复合材料混合接头。结果,使用有限元技术,提出的设计方法已经验证了合并和详细描述重要现象(如接头的夹紧,摩擦,间隙和二次弯曲)的影响的能力,这些现象是复杂的三维现象。在混合接头的设计过程中非常重要。

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