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Stiffness analysis of composite beams using roller clamps

机译:辊钳复合梁的刚度分析

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摘要

High stiffness and high strength to weight ratio are the attributes which make composite a preferred material over any other conventional materials in many engineering applications. The ease of engineering desired material properties by controlling the physical and structural parameters has made it highly preferred while selecting materials for light weight but high strength and durable applications. In this present study a completely new approach is tested with the objective to enhance the strength of a layered composite beam with the use of roller clamps. Authors have not found any other researcher who has initiated any approach in this regard. A roller clamp is used to provide uniform force in the transverse directions of the beam across its width in a line. The free vibration of the clamped cantilever beam is studied and compared its values with the unclamped one. The location of clamp is also varied to observe its effect on the natural frequency. Simulated results for clamped free beams are validated with the published literatures which establishes the acceptability of the design model. The response of clamped beam has shown interesting results indicating an increase in stiffness compared to unclamped beam. The location of clamp also indicates increasing tendency as it gradually move from fixed end to the free end. This approach can be very much useful for enhancing the composite beam stiffness which got degraded due to climatic conditions, impact, delamination or any other reason.
机译:高刚度和高强度重量比是在许多工程应用中通过任何其他常规材料在任何其他常规材料中制造优选材料的属性。通过控制物理和结构参数来易于工程所需的材料特性,这使得在选择重量轻,而且高强度和耐用的应用中选择材料的同时使其非常优选。在本研究中,通过使用辊夹来测试一种完全新的方法,以提高层状复合梁的强度。作者尚未找到任何其他研究人员在这方面发起了任何方法。辊夹用于在梁的横向于其宽度的宽度中提供均匀的力。研究了夹紧悬臂梁的自由振动并将其值与未穿透的悬臂进行了比较。夹具的位置也变化以观察其对自然频率的影响。夹紧自由梁的模拟结果与发布的文献验证,该文献建立了设计模型的可接受性。夹紧光束的响应表明与未夹闭光束相比的刚度增加。夹具的位置还表明趋势逐渐从固定端移动到自由端。这种方法对于增强由于气候条件,影响,分层或任何其他原因而降解的复合束刚度非常有用。

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