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Laser forming of a rectangular plate
Introduction
Laser forming is a special way of rapid prototyping, during which laser induced thermal distortion is used to shape sheet metal without hard tooling or external forces. Compared with the traditional metal forming technologies, laser forming has many advantages. The cost of the forming process is greatly reduced because no tools or external forces are involved in the process, useful for small batch and high variety of sheet metal components. With the high flexibility in the laser beam's delivering and power regulating systems, it is easy to incorporate laser forming into an automatic flexible manufacturing system. Laser forming uses localized heating to induce controlled deformation and therefore has the advantage of energy efficiency, as compared to other thermal processes where an entire workpiece normally needs to be heated.
Animated Quicktime laser forming of a rectangular plate
QuickTime Video
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Parameters P=800W V=50mm/s P=400W V=25mm/s Temperature movie movie Stress: Mises movie movie Stress: S11 movie movie Stress: S22 movie movie Stress: S33 movie movie Stress: S12 movie movie Stress: S13 movie movie Stress: S23 movie movie Plastic strain: PE11 movie movie Plastic strain: PE22 movie movie Plastic strain: PE33 movie movie Plastic strain: PEEQ movie movie Note: Mises stress is defined as equivalent yield stress of metal:
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Sij is defined as ij component of Stress. PEij is the ij component of plastic strain.
To better understand what is laser forming process and interpret the results, please take a look at the explanation in detail...
An example of Quicktime movie of Mises stress during laser forming of a rectangular plate
*download QuickTime