纤维螺旋缠绕管的缠绕角优化
发布时间：2019-04-22 19:51
【摘要】：为提高材料强度的利用效率,实现纤维缠绕管强度比沿壁厚的均匀分布,在内压和轴向力作用下,基于Tsai-Wu准则,以沿壁厚方向的最小强度比最大化为目标,建立变缠绕角纤维缠绕管的最优化模型。提出将复合形法和梯度法相结合的改进优化算法,通过优化逐层变化的缠绕角使最小强度比最大化,实现强度比沿壁厚更均匀分布。以玻璃纤维管为例,在纯环向应力、环向应力与轴向应力之比为2∶1和1∶1的3种工况下,研究不同壁厚条件下最优缠绕角分布及其强度比提升效果和均匀程度。结果表明:优化后结构的材料利用率明显提升,不同工况、壁厚对最优缠绕角的分布规律影响很大;最优缠绕角可以实现沿壁厚等强度。
[Abstract]:In order to improve the utilization efficiency of the material strength and realize the uniform distribution of the strength ratio along the wall thickness, under the action of internal pressure and axial force, based on the Tsai-Wu criterion, the aim is to maximize the minimum strength ratio along the wall thickness direction. The optimization model of filament winding tube with variable winding angle is established. An improved optimization algorithm combining composite shape method and gradient method is proposed. The minimum strength ratio is maximized by optimizing the winding angle of layer by layer, and the strength distribution is more uniform than that along the wall thickness. Taking glass fiber tube as an example, the optimal winding angle distribution, strength ratio and uniformity under the conditions of pure circumferential stress, ratio of circumferential stress to axial stress of 2:1 and 1:1 are studied under different wall thickness conditions. The results show that the material utilization ratio of the optimized structure increases obviously, and the wall thickness has a great influence on the distribution of the optimal winding angle under different working conditions, and the optimal winding angle can achieve equal strength along the wall thickness.
【作者单位】： 北京航空航天大学航空科学与工程学院;天津工业大学机械工程学院;天津市现代机电装备技术重点实验室;
【基金】：国家自然科学基金资助项目(51575390) 天津市应用基础与前沿技术研究计划一般项目(14JCYBJC19200)
【分类号】：TB30
本文编号：2463146
[Abstract]:In order to improve the utilization efficiency of the material strength and realize the uniform distribution of the strength ratio along the wall thickness, under the action of internal pressure and axial force, based on the Tsai-Wu criterion, the aim is to maximize the minimum strength ratio along the wall thickness direction. The optimization model of filament winding tube with variable winding angle is established. An improved optimization algorithm combining composite shape method and gradient method is proposed. The minimum strength ratio is maximized by optimizing the winding angle of layer by layer, and the strength distribution is more uniform than that along the wall thickness. Taking glass fiber tube as an example, the optimal winding angle distribution, strength ratio and uniformity under the conditions of pure circumferential stress, ratio of circumferential stress to axial stress of 2:1 and 1:1 are studied under different wall thickness conditions. The results show that the material utilization ratio of the optimized structure increases obviously, and the wall thickness has a great influence on the distribution of the optimal winding angle under different working conditions, and the optimal winding angle can achieve equal strength along the wall thickness.
【作者单位】： 北京航空航天大学航空科学与工程学院;天津工业大学机械工程学院;天津市现代机电装备技术重点实验室;
【基金】：国家自然科学基金资助项目(51575390) 天津市应用基础与前沿技术研究计划一般项目(14JCYBJC19200)
【分类号】：TB30
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