贾宝惠, 方嘉晨, 武涛, et al. Failure Safety Analysis of Composite Bolt Joint Under Influence of Clamping Force[J]. Mechanical Science and Technology for Aerospace Engineering, 2025, 44(7): 1290-1300.
贾宝惠, 方嘉晨, 武涛, et al. Failure Safety Analysis of Composite Bolt Joint Under Influence of Clamping Force[J]. Mechanical Science and Technology for Aerospace Engineering, 2025, 44(7): 1290-1300. DOI: 10.13433/j.cnki.1003-8728.20230261.
To study the effect of the clamping force(1~6 kN) on the properties of composite bolt joint
a series of static tensile tests were conducted. The parameterized stochastic simulation model involving the scatter of the assembly parameters was constructed to simulate the tensile failure of the composite bolt joint. Analyzing the simulation strengths statistically
Weibull function was used to analyze the scatter in the simulation results and estimate the characteristic strengths. Safety design strengths under different reliability levels were estimated by using the dual reliability index method. The results showed that compared to a clamping force of 1 kN
the limit load and ultimate load were
respectively
increased by 18.7% and 12.9% with the increasing of clamping force within the range of 1-6 kN. Comparing the evaluation results under the traditional safety factor method and the dual reliability index method
the average limit and ultimate safety strength increased by 7.35% and 20.51%
respectively
which reduced reliability design redundancy when ensuring safety.