Research on preload relaxation for composite pre-tightened tooth connections
Source abstract
Abstract
Abstract Preload is the primary reason why pre-tightened tooth connections (PTTC) can transfer relatively large loads. However, creep of the composite would cause the preload relaxation, resulting in reducing bearing capacity of the connection. To study the preload relaxation of PTTC caused by the creep of composites, a prediction formula is deduced by converting the viscoelastic problem to an elastic problem using Laplace transform. Meanwhile, long-term experimental research on the preload relaxation of composite pre-tightened tooth connection with different initial preloads and different geometry sizes was made. The theoretical results are compared with experimental data obtained by long-term experiment, and the results indicate that the calculation formula can predict the preload relaxation well in linear viscoelastic state. The preload relaxation mainly occurs at the beginning of loading and it tends to be steady in the middle and later periods.
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Research context
OpenAlex topics: Mechanical stress and fatigue analysis · Engineering Structural Analysis Methods · Structural Load-Bearing Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Civil Engineering, Chongqing Jiaotong University , Chongqing 400074 , China
Institute of Advanced Structure Technology, Beijing Institute of Technology , Beijing 100081 , China
School of Mechanical and Power Engineering, Nanjing University of Technology , Nanjing 21007 , China
Army Logistics University of PLA , Chongqing 400001 , China
References (20)
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