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加筋板作为一种典型结构被广泛应用于航空航天领域,为进一步拓展直筋加筋板的设计空间,提出了一套基于Model Center设计优化环境、Catia和Abaqus的曲线片型加筋板优化设计框架.一方面,筋条曲线采用参数数目可变的等距剖分三次B样条插值函数,为曲筋加筋板提供了足够大的优化空间.另一方面,采用筋条加载端相聚和筋条垂直于板边2种方式来解决曲线片型加筋板的筋条加载问题,从而产生了一些新的曲筋加筋板布局形式.优化结果表明,对于单向载荷主导的加筋板,曲筋加筋板相对于直筋加筋板稳定性改善不大.但对于复杂组合载荷,曲筋加筋板获得了比直筋加筋板更好的稳定性.
As a typical structure, stiffened panels are widely used in the aerospace field. In order to further expand the design space of stiffened stiffened panels, a set of optimized design environment based on Model Center is proposed. The stiffened panel of Catia and Abaqus is optimized Design framework.On the one hand, the curve of ribs adopts the equidistantly-spaced cubic B-spline interpolation function with a variable number of parameters, which provides enough space for the optimization of the rebar stiffened plate.On the other hand, And ribs perpendicular to the edge of the plate in two ways to solve the problem of tendon loading of the curved plate stiffener, resulting in some new stirrup stiffener plate layout.Optimization results show that for unidirectional load-dominated stiffener The stability of rebars and rebar stiffeners relative to stiffened stiffened plates has not much improvement, but for complex combined loads, stiffened stiffened plates have better stability than stiffened stiffened plates.