A scaling procedure for measuring thermal structural vibration generated by wall pressure fluctuation

Zhao, Xin; Chen, Haibo; Lei, Juanmian; Ai, Bangcheng

doi:10.1016/j.cja.2019.01.009

Cited by 3 publications

(1 citation statement)

References 32 publications

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“…2. Uneven temperature changes in the structure 41 , thermal deformation can not be carried out freely, will produce tensile and compressive thermal stresses in the object, making the structure local stiffness increase or decrease, changing the initial structural stiffness distribution, the resulting additional obtained initial stress stiffness matrix is noted as K σ , expressed by the formula:…”

Section: Thermal Modal Analysismentioning

confidence: 99%

Study on the Design of Thermal Vibration Integrated Reliability Enhancement test Profile based on Multi-stress Failure Excitation Simulation

Xue,

XU,

Feng

et al. 2023

Preprint

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The current reliability enhanced test profiles are inefficient and costly, an integrated temperature and vibration reliability enhancement test profile design method based on multi-stress failure excitation simulation (MSS-RET) for typical ballistic devices is presented in this paper. First, the fault logic analysis is conducted by combining the product fault tree and product structural characteristics, and establishment of a integrated test profile design framework, to improve the determination of profile elements of the guidelines. using multi-stress finite element deterministic analysis joint failure physical model of the failure prediction method, obtain a vibration termination stress valuation, starting stress, and other profile elements, achieved the optimization of the test accuracy; Combined with relevant standards, clarify the temperature stabilization time. Through the principle of thermal stress generation, combined with finite element simulation data analysis, specify the vibration excitation loading time, optimize fault excitation intensity, improve the low efficiency and high cost of the reinforcement test. The MSS-RET is validated by taking the design of a comprehensive temperature and vibration test profile of a fuze detection module as an example, the results shows that the obtained test profile can reduce the test error by up to 44% compared with the traditional method.

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Section: Thermal Modal Analysismentioning

confidence: 99%

Study on the Design of Thermal Vibration Integrated Reliability Enhancement test Profile based on Multi-stress Failure Excitation Simulation

Xue,

XU,

Feng

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

A formulation for turbulent-flow-induced vibration of elastic plates with general boundary conditions

Xiao-ji

Jin

et al. 2021

International Journal of Mechanical Sciences

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Experimental investigation on pulsating pressure of a cone-cylinder-hemisphere model under different flow velocities

Miao

Pang

et al. 2020

Physics of Fluids

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This paper presents the results of wall pulsating pressure experiments on a cone-cylinder-hemisphere model with lengths of 95 cm and maximum diameters of 20 cm under conditions of different flow velocities. By comparative analysis of experimental data, it has been found that the pulsating pressure on the wall surface of the flow-induced structure continues to rise as the flow velocity increases. It was also found that the pulsating pressure value of the shoulder and stern of the cone-cylinder-hemisphere structure is larger than in other positions. Additionally, the reliability and accuracy of the test results are verified by comparing the measured results with numerical simulation, and the characteristics and rules of the pulsating pressure of the flow-induced structure are analyzed. The pulsating pressure level is higher at the highest point and decays rapidly within 500 Hz; then, the decay rate slows down, and the pulsating pressure gradually decreases with frequency. Underwater vehicles usually adopt the form of a cone-cylindrical-hemisphere. Therefore, studying the pulsating pressure of a cone-cylinder-hemisphere structure is of great significance to the research of pulsating pressure and flow-induced noise of underwater vehicles.

show abstract

A scaling procedure for measuring thermal structural vibration generated by wall pressure fluctuation

Cited by 3 publications

References 32 publications

Study on the Design of Thermal Vibration Integrated Reliability Enhancement test Profile based on Multi-stress Failure Excitation Simulation

Study on the Design of Thermal Vibration Integrated Reliability Enhancement test Profile based on Multi-stress Failure Excitation Simulation

A formulation for turbulent-flow-induced vibration of elastic plates with general boundary conditions

Experimental investigation on pulsating pressure of a cone-cylinder-hemisphere model under different flow velocities

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