A method for determining the strength of an engine connecting rod
An engine connecting rod and strength technology, which is applied in the field of analysis and testing, can solve the problems of high labor intensity of testers, cumbersome test operation process, and long test time, and achieve the effects of intuitive distribution of stress results, reduced number of tests, and low cost
Active Publication Date: 2022-05-27
ARMOR ACADEMY OF CHINESE PEOPLES LIBERATION ARMY
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The test operation process of this method is cumbersome and the test efficiency is slow, resulting in high labor intensity for testers and long test time
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0054] Example 1, see attached Figure 1 、 4 , a method for determining the strength of an engine linkage, consisting of the following steps:
[0055] See attached Figure 2 , A. 3D modeling;
[0056] Establish a three-dimensional model of the connecting rod assembly and the piston pin, wherein the connecting rod assembly comprises: a connecting rod body, a connecting rod cover, a bolt, an upper and lower bearing pads and a bushing;
[0057] See attached Figure 3 , B. Finite element meshing;
[0058]The above models are divided into finite element meshes by half of the symmetrical surface perpendicular to the axis of the connecting rod large head hole; the rod body of the connecting rod is encrypted with the transition area of the large and small heads, and the elements are all using 2nd order 10-node tetrahedral elements;
[0059] C. Define contact pairs;
[0060] C1. The connecting rod body large head hole and the bearing, the connecting rod body small head hole and the bushing is...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention belongs to the technical field of analysis and testing, and particularly relates to a method for determining the strength of a connecting rod. A method for determining the strength of an engine connecting rod, comprising the following steps: A. three-dimensional modeling; B. finite element meshing; C. defining contact pairs; D. defining material properties; E. defining loads and boundary conditions; F. Setting working conditions and corresponding models; G. Analysis and judgment; H. High cycle fatigue analysis working conditions and result analysis. The invention uses the finite element calculation method to calculate and analyze the connecting rod of the engine by using a computer. Compared with the test method, the invention has the advantages of low cost, good flexibility, short cycle, high precision, and intuitive distribution of stress results. The number of tests is reduced, the test cost is reduced, and the engine development speed is increased.
Description
Technical field [0001] The present invention belongs to the field of analytical testing techniques, particularly relates to a method of determining the strength of a connecting rod. Background [0002] The connecting rod in the engine connects the piston and the crankshaft and transmits the force on the piston to the crankshaft, transforming the reciprocating motion of the piston into the rotational motion of the crankshaft. The connecting rod group is composed of a connecting rod body, a connecting rod large head cover, a connecting rod small head bushing, a connecting rod large head bearing, and a connecting rod bolt (or screw). The connecting rod group is subjected to the gas force transmitted by the piston pin and its own oscillation and the reciprocating inertia force of the piston group, so the connecting rod is subjected to alternating loads such as compression and stretching. The connecting rod must have sufficient fatigue strength and structural stiffness. Insufficient f...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/00G01M5/00
CPCG01M13/00G01M5/0066G01M5/0058
Inventor 邢金昕贾进峰李占旭刘义乐刘峻岩彭志召刘瑶瑶卢方杰
Owner ARMOR ACADEMY OF CHINESE PEOPLES LIBERATION ARMY