Unlock instant, AI-driven research and patent intelligence for your innovation.

A Method for Determining Friction Forces in Plastic Deformation of Metals

A technology of plastic deformation and friction force, applied in the field of determining the friction force in the plastic deformation of metal, can solve problems such as the friction force that cannot be solved satisfactorily, and achieve the effect of high precision and high efficiency

Inactive Publication Date: 2016-03-09
GUANGXI UNIVERSITY OF TECHNOLOGY
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the friction problem cannot be solved satisfactorily in the plastic forming process.

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A Method for Determining Friction Forces in Plastic Deformation of Metals
  • A Method for Determining Friction Forces in Plastic Deformation of Metals
  • A Method for Determining Friction Forces in Plastic Deformation of Metals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The invention relates to a method for determining the friction force in metal plastic deformation, comprising the steps of:

[0020] The first step is to preset the constant friction factor

[0021] First assume that the friction factor on the friction surface of the material is a constant m, namely:

[0022] τ f = mk = m 3 σ s - - - ( 2 - 39 )

[0023] In the formula, k represents the shear yield limit;

[0024] The second step is to set a relative movement speed function as the friction coefficient

[0025] The friction coefficient of this assumption is variable, and the friction force on the contact surface of the material is a linear function satisfying Coulomb's law, as shown in formula (2-40):

[0026] μ=α...

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

No PUM Login to View More

Abstract

The invention discloses a method for determining frictional force in metal plastic deformation, comprising the following steps: Step 1. Constant friction factors are preset; Step 2. A relative movement function of velocity is set as a friction coefficient; and Step 3. Frictional force is solved according to a step function of frictional force. By the frictional force method, frictional force value in the metal plastic deformation can be accurately obtained.

Description

technical field [0001] The invention relates to a method of determining frictional forces in plastic deformation of metals. Background technique [0002] At present, in the problem of metal plastic deformation, the problem of how to deal with boundary friction will be encountered. In the plastic forming process, the friction force is affected by many factors, and in many cases, the friction force will change during the forming process. Whether the friction force can be accurately calculated directly affects the accuracy of the solution results, so further research is needed on the friction force. At present, the friction problem cannot be satisfactorily solved in the plastic forming process. Contents of the invention [0003] The purpose of the present invention is to provide a method for determining the friction force in metal plastic deformation aiming at the defects existing in the prior art. [0004] In order to achieve the above object, the present invention adopts...

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
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01L5/00
Inventor 王镇江张献文
Owner GUANGXI UNIVERSITY OF TECHNOLOGY