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Probabilistic forecasting method for performance of shock isolation rubber support

A vibration-isolation rubber and probability prediction technology, which is applied in the direction of shock-proof, special data processing applications, instruments, etc., can solve the problems of large number of detection, uneconomical, high energy consumption, etc., to improve detection efficiency, reduce detection cost, and ensure reliability sexual effect

Inactive Publication Date: 2014-06-11
SOUTHEAST UNIV
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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

Method used

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  • Probabilistic forecasting method for performance of shock isolation rubber support
  • Probabilistic forecasting method for performance of shock isolation rubber support
  • Probabilistic forecasting method for performance of shock isolation rubber support

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Embodiment Construction

[0022] The invention utilizes the concept of the confidence interval in the probability theory to check the reliability of the detected products, and determines the reasonable number of detection samples under the expected reliability through a trial algorithm. The implementation of this method includes the following five steps:

[0023] Step 1: Determine the main indicators for performance testing of the isolation rubber bearing, and the number is represented by m. There are many performance indicators of shock-isolation rubber bearings, including mechanical properties, durability properties, and rubber material properties. For the sake of simplicity, several main performance indicators can be used for calculation according to the actual situation, and more indicators can also be used for testing to ensure the integrity of performance testing. For example, ultimate compressive strength, compressive modulus of elasticity and shear modulus of elasticity can be selected as dete...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/36E04B1/98G06F19/00
Inventor 王浩黄小伟吴继荣邢晨曦李爱群
Owner SOUTHEAST UNIV
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