面向周期性的变刚度层合板轨迹规划及屈曲特性  

Trajectory planning and buckling characteristics of periodic variable stiffness laminated plates

作　　者：丁潇潇 曹忠亮 DING Xiaoxiao;CAO Zhongliang(School of Mechanical Engineering,Jiangsu University of Technology,Changzhou 213001,China)

机构地区：[1]江苏理工学院机械工程学院,常州213001

出　　处：《复合材料科学与工程》2025年第3期15-21,共7页Composites Science and Engineering

基　　金：江苏省高等学校自然科学研究重大项目(21KJA460004);江苏省重点研发计划技术项目(BE2023014-3)。

摘　　要：为提高复合材料层合结构的承载能力,对层合板的压缩屈曲性能进行了研究。首先,为提高线性函数轨迹的可设计性,本文结合三角函数曲线的特点提出新型周期线性纤维轨迹函数数学模型;其次,利用Python/ABAQUS进行复合材料层合板二次开发建模;最后,对经典定刚度和新型变刚度层合板进行屈曲对比分析,揭示了变刚度层合板屈曲性能对曲线轨迹始末角和周期参数的响应机制。结果表明,变角度轨迹的T_(0)和T_(1)取值范围为[30°,60°]时,其一阶屈曲载荷明显高于经典定刚度层合板一阶屈曲载荷,较最优定刚度铺层屈曲载荷提高了21.41%,并且通过控制周期n的取值能进一步提高层合板的一阶屈曲载荷,从而提高稳定性。In order to improve the load-bearing capacity of composite laminated structures,the compression buckling properties of the laminates were studied.First,in order to improve the designability of linear function trajectories,this paper proposes a new periodic linear fiber trajectory function mathematical model based on the characteristics of trigonometric function curves;secondly,Python/ABAQUS is used to conduct secondary development modeling of composite laminates;finally,the classic comparative buckling analysis of constant stiffness and new variable stiffness laminates revealed the response mechanism of the buckling performance of variable stiffness laminates to the curve trajectory starting and ending angles and period parameters.The results show that when the T_(0) and T_(1) values of the variable angle trajectory are in the range of[30°,60°],the first-order buckling load is significantly higher than the classic constant-stiffness laminate,and is 21.41%higher than the optimal constant-stiffness laminate buckling load.And by controlling the value of period n,the first-order buckling load of the laminate can be further increased,thereby improving stability.

关 键 词：复合材料层合板 变刚度 轨迹规划 二次开发 屈曲性能 

分 类 号：TB332[一般工业技术—材料科学与工程]