基于变刚度软物质的复合材料预紧力齿力学性能研究OA

The embedding of soft materials makes the load distribution among the teeth in the pre-tightened tooth joint of composite materials tend to be uniform,improving the bearing performance of the joint.However,it also leads to stress concentration at the tooth tip of a single tooth,which cannot fully utilize the performance of the soft ma-terial.Based on this,this paper proposes a single-tooth joint configuration with embedded variable stiffness soft mate-rials.Through experiments and finite element models,the influence of constant stiffness and variable stiffness soft ma-terials on the bearing capacity of single-tooth joints is compared and analyzed.The research results show that com-pared with the traditional single-tooth joint,embedding constant stiffness soft materials reduces the bearing capacity of the single-tooth joint by 54.4%,while embedding variable stiffness soft materials increases the bearing capacity of the single-tooth joint by 12.5%.Compared with constant stiffness soft materials,the embedding of variable stiffness soft materials can effectively reduce the stress concentration at the tooth tip of the composite material teeth,thereby impro-ving the bearing performance of the joint.