Calculation Model of Stiffness and Stress of Diesel Engine Leaf Spring Torsional Vibration Absorber

A technology of torsional vibration damper and calculation model, applied in calculation, computer-aided design, instrument and other directions, can solve the problems of low calculation efficiency, complex stiffness and stress calculation, unfavorable application in design, etc. Short cycle, reasonable design effect

Active Publication Date: 2020-07-28
SHANGHAI OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Leaf spring torsional vibration dampers are mainly used in high-power diesel engines, such as diesel engines for ships and generator sets, etc. The calculation of stiffness and stress is more complicated, and its calculation model has not yet appeared in relevant literature. People often use finite element analysis and other means For calculation, the calculation efficiency is low and the process is cumbersome, which is not conducive to the application in design

Method used

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  • Calculation Model of Stiffness and Stress of Diesel Engine Leaf Spring Torsional Vibration Absorber
  • Calculation Model of Stiffness and Stress of Diesel Engine Leaf Spring Torsional Vibration Absorber
  • Calculation Model of Stiffness and Stress of Diesel Engine Leaf Spring Torsional Vibration Absorber

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Embodiment

[0047] In the present invention, the formulas in the summary of the invention can be compiled in EXCEL software, and parameters can be input and calculated. An implementation example that the present invention provides, each parameter is set according to table 1, and the stiffness after calculation is 7420.9kN.m / rad; image 3 , the deflection curve see Figure 4 , the bending stress distribution curve is shown in Figure 5 . It can be seen from the deflection image that the two reeds only touch at point A, and the assumed calculation method is correct. It can be seen from the calculation results that the fixed end of the reed ( Figure 6 middle B) and gasket end ( Figure 6 Middle A) is the stress maximum, and the stress values ​​of these two places are listed in Table 2 below.

[0048] Table 1 Shock absorber parameter list

[0049] serial number variable value unit 1 n 24 2 R 0.21 m 3 L 0.114 m 4 b 0.09975 m 5 E 210000 ...

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Abstract

The invention discloses calculation models of a leaf spring torsional vibration damper in the technical field of diesel engines. The calculation models include the rigidity calculation model and the leaf spring stress calculation model of the leaf spring torsional vibration damper, wherein the rigidity calculation model is obtained by calculating the bending moment of spring leaves, the interaction force between two spring leaves, the tail end deflection, the total moment and the turn angle, and the leaf spring stress calculation model is obtained by calculating the interaction force between two spring leaves, the bending moment of the spring leaves and the bend section modulus. The calculation models are reasonable in design, high in calculation precision and suitable for model selection and optimization design of the leaf spring torsional vibration damper.

Description

technical field [0001] The invention relates to a calculation model of a leaf spring torsional vibration damper in the technical field of diesel engines, including a stiffness and stress calculation model. Background technique [0002] Torsional shock absorbers are important components on ships and automobile engines, and are mainly composed of inertia blocks, elastic components and damping components. A torsional vibration damper is installed on the free end of the engine crankshaft. The shock absorber can absorb the torsional vibration of the engine crankshaft, which is of great significance to the working reliability of the engine crankshaft, as well as vibration and noise control. Specifically, the torsional vibration damper has the function of adjusting the natural frequency of the torsional vibration of the engine crankshaft, absorbing vibration energy, reducing the peak torque of the engine, and reducing the torsional vibration. For the torsional shock absorber, the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/17G06F119/14
CPCG06F30/17G06F2119/06
Inventor 田中旭李广洲宋秋红张俊
Owner SHANGHAI OCEAN UNIV
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