laser welding simulation
SUMMER INTERNSHIP
REPORT
FINITE ELEMENT TRANSIENT THERMAL
ANALYSIS OF LASER WELDING PROCESS
ABSTRACT
In this project, Laser welding process has successfully been used for joining of two stainless steel plates. The sizes of the metal plates are 50mmX40mmX2mm each. The distribution of the temperature field in laser welding using stainless steel sheets were simulated by
ANSYS.
The thermal properties which have been used for thermal simulation are assumed to be varying with temperature, curves of which are shown in the project. Traveling heat source model of
ANSYS was used for simulation purpose. Thermal simulation shows the temperature distribution at different position of the sheets at different time instants. The temperature distribution mainly depends upon the properties of the material i.e. thermal conductivity, specific heat and the density of the material. These properties vary as non linear function of temperature.
In this project, laser welding of stainless steel was studied at different values of heat flux and welding speed results of which has been shown in the conclusion part of the project.
Saurav Kumar
3
INDEX
Topic
Page No.
4
INTRODUCTION
5
Welding is a fabrication or sculptural process that joins materials, usually metals or thermoplastics, by causing coalescence. This is often done by melting the work pieces and adding a filler material to form a pool of molten material (the weld pool) that cools to become a strong joint, with pressure sometimes used in conjunction with heat, or by itself, to produce the weld.
Different types of energy sources can be used for welding, including a gas flame, an electric arc, a laser, an electron beam, friction, and ultrasound. While often an industrial process, welding may be performed in many different environments, including open air, under water and in outer space. Welding is a potentially hazardous undertaking and precautions are required to avoid burns,
REPORT
FINITE ELEMENT TRANSIENT THERMAL
ANALYSIS OF LASER WELDING PROCESS
ABSTRACT
In this project, Laser welding process has successfully been used for joining of two stainless steel plates. The sizes of the metal plates are 50mmX40mmX2mm each. The distribution of the temperature field in laser welding using stainless steel sheets were simulated by
ANSYS.
The thermal properties which have been used for thermal simulation are assumed to be varying with temperature, curves of which are shown in the project. Traveling heat source model of
ANSYS was used for simulation purpose. Thermal simulation shows the temperature distribution at different position of the sheets at different time instants. The temperature distribution mainly depends upon the properties of the material i.e. thermal conductivity, specific heat and the density of the material. These properties vary as non linear function of temperature.
In this project, laser welding of stainless steel was studied at different values of heat flux and welding speed results of which has been shown in the conclusion part of the project.
Saurav Kumar
3
INDEX
Topic
Page No.
4
INTRODUCTION
5
Welding is a fabrication or sculptural process that joins materials, usually metals or thermoplastics, by causing coalescence. This is often done by melting the work pieces and adding a filler material to form a pool of molten material (the weld pool) that cools to become a strong joint, with pressure sometimes used in conjunction with heat, or by itself, to produce the weld.
Different types of energy sources can be used for welding, including a gas flame, an electric arc, a laser, an electron beam, friction, and ultrasound. While often an industrial process, welding may be performed in many different environments, including open air, under water and in outer space. Welding is a potentially hazardous undertaking and precautions are required to avoid burns,