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Analysis of a Fixed-Guided Compliant Beam With an Inflection Point Using the Pseudo-Rigid-Body Model Concept

机译:使用伪刚体模型概念分析具有拐点的固结柔顺梁

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This paper provides an efficient method of analysis for a fixed-guided compliant beam with an inflection point, subjected to beam end load or displacement boundary conditions, or a combination thereof. To enable this, such a beam is modeled as a pair of wellestablished pseudo-rigid-body models (PRBMs) for fixed-free compliant beam segments. The analysis procedure relies on the properties of inflection in developing the necessary set of parametric, static equilibrium and compatibility equations for solution. The paper further discusses the multiplicity of possible solutions, including displacement configurations, for any two specified beam end displacement boundary conditions, depending on the locations and types of the effecting loads on the beam to meet these boundary conditions. A unique solution may exist when a third beam end displacement boundary condition is specified; however, this selection is not unconditional. A concept of characteristic deflection domain is proposed to assist with the selection of the third boundary condition to yield a realistic solution. The analysis method is also used to synthesize a simple, fully compliant mechanism utilizing the fixed-guided compliant segments.
机译:本文提供了一种有效的分析方法,该方法对具有拐点的固定导向柔性梁进行了梁端载荷或位移边界条件或其组合的分析。为了实现这一点,将这种梁建模为一对用于固定自由的顺应梁段的公认的伪刚体模型(PRBM)。分析过程依赖于拐点的性质,从而开发出必要的一组参数,静态平衡和相容性方程来求解。本文进一步讨论了任意两个指定梁端位移边界条件的可能解决方案的多样性,包括位移配置,这取决于满足这些边界条件的梁上有效载荷的位置和类型。当指定了第三束端位移边界条件时,可能存在唯一的解决方案。但是,此选择不是无条件的。提出了特征偏转域的概念,以协助第三边界条件的选择,以产生实际的解决方案。该分析方法还用于利用固定引导的柔顺段来合成简单,完全柔顺的机制。

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