Probabilistic forecasting method for performance of shock isolation rubber support

Abstract

The invention discloses a probabilistic forecasting method for the performance of a shock isolation rubber support. The method assumes that the detection indexes of the selected shock isolation rubber support obey normal distribution, and introduces the concept of confidence interval in the probability theory to forecast the performance of the shock isolation rubber support based on statistic analysis on the performance of a great number of detected shock isolation rubber products. In specific implementation, the minimal number of samples reasonably detected under the expected reliability is determined by a trial method according to the reliability of the main indexes for performance detection of the selected shock isolation rubber support and the performance indexes reaching the qualification requirements. As the reliability beta can be preset as different values, reliability sensitivity analysis is performed to determine the optimal beta value. The probability-based reliability guaranteeing method guarantees the product reliability without detecting the supports one by one, improves the detection efficiency, lowers the detection cost, greatly reduces the energy consumption and conforms to the development trend of the conservation-minded society.

Description

technical field [0001] The invention relates to a method for predicting the performance of shock-isolation rubber bearings based on probability, which is particularly suitable for detecting a large number of shock-isolation rubber bearing products on the basis of ensuring the reliability of the vibration-isolation rubber bearings. Background technique [0002] Earthquakes have always been a natural disaster that seriously endangers human beings. Especially in the past 40 years, there have been many major earthquakes around the world, including the San Fernando earthquake in the United States, the Loma Prieta earthquake, the Tangshan earthquake in China, the Wenchuan earthquake, the Hanshin earthquake in Japan, the Haiti earthquake, the Indonesia earthquake and the New Zealand earthquake, etc. It caused very heavy loss of life and property. [0003] With the continuous deepening of the understanding of the mechanism of earthquake action, people began to shift the focus of th...

AI Technical Summary

Problems solved by technology

However, according to the requirements of the current relevant standards, for the same batch of vibration-isolation rubber bearings, the number of product sampling inspections is generally required to be half of the total number, and sometimes even all inspections are required.

Often due to the large number of tests, it leads to low efficiency, high energy consumption costs, uneconomical, and does not conform to the development trend of a conservation-oriented society

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