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首页> 外文期刊>Composite Structures >Application of the Tsai's modulus and double-double concepts to the definition of a new affordable design approach for composite laminates
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Application of the Tsai's modulus and double-double concepts to the definition of a new affordable design approach for composite laminates

机译：Tsai模量和双双倍概念的应用在复合层压板上新的实惠设计方法的定义

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摘要

Composites design has always been perceived to be complicated, time-consuming and therefore not affordable. With a paradigm shift, it is possible to make composites are as straightforward as metals. Each metal is characterized by two key material properties: its Young's modulus and strength. The adoption of the Tsai's modulus as the only stiffness constant characterising any CFRP, and failure strain as the only measure of strength, we can make composite design as straightforward as metals design. Actually, with these two material characteristics, for any CFRP, material, laminate, and strain allowable can all be scaled, just like metals. Another breakthrough is the replacement of the traditional quad laminates of 0, +/- 45, 90 by double-double (DD) in [+/-Phi/+/-psi]. This replacement allows to substuture a discrete collection by a continuous field of orientations. A few dozen choices, replaced by hundreds. Indeed, double-double can make structures lighter that quad cannot do, thanks to the Lam-search optimizer, which is able, in combination with Fem tools, to sort, instantaneously, the best DD angles allowing laminates stiffness and strength tailored on specific loading conditions. The bottom line: Tsai's modulus and double-double are new but are simple conceptually, and Lam-search makes their use practical. In the end, lower weight and lower cost are derived by DD to deliver aggressive taper and 1-axis layup that will be stiff, strong, easy to layup, not prone to error, wrinkle, warpage and delaminatnion.
机译：复合材料设计始终被认为是复杂，耗时的，因此不实惠。通过范式偏移，可以使复合材料与金属一样简单。每个金属的特点是两个关键材料特性：其杨氏模量和强度。采用TSAI模量作为唯一刚度常数表征任何CFRP，而且失效应变作为唯一的力量测量，我们可以将复合设计作为金属设计直截了当。实际上，对于这种两种材料特性，对于任何CFRP，材料，层压材料和剩余的应变，就可以缩放，就像金属一样。另一个突破是在[+/-phi / + / - psi]中替换0，+/- 45,90的传统Quad层压板0，+/- 45,90]。这种替换允许通过连续的方向进行分离收集。几十种选择，取而代之的是数百个。实际上，双倍双倍可以使Quad无法做的结构更轻，因为LAM-Search Optimizer，它能够与FEM工具组合进行分类，即时排序，最佳DD角度，允许层压在特定负载上的层压刚度和强度。状况。底线：Tsai的模量和双倍双倍是新的，但概念上很简单，Lam-Search使他们使用实用。最终，通过DD得出较低的重量和更低的成本，以提供侵略性的锥度和1轴叠层，这将是僵硬的，强大，易于上篮，不容易出错，皱纹，翘曲和Delaminatnion。

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