Bi-metallic strips are subject to bending due to heat - and can be used to convert change in temperature to mechanical displacement. Bending occurs towards the side of the metal with the lowest temperature coefficient of expansion. Assuming two metals with the same shape joined together - bending of a bi-metal strip due to change in the temperature can be calculated as. The bending can be calculated as. Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro. We don't collect information from our users.
Curvature of a Bimetallic Beam - calculator - fxSolver
A bimetallic strip is a device which is used to convert thermal energy into mechanical motion. It is used as a thermally triggered switch and works on the principle of differential expansion of heated unalike metals. The bimetal strip is made up of two different metals which are joined together to form a flat strip. When the strip is heated, one of the metals gets heated and expands faster as compare to other, causing the strip to bend. This mechanical deflection is then yoked in many ways to knob electrical circuits. When any solid, liquid or gas is heated, its molecules start expanding. As long as the heated material is not restricted at a point, it will keep expanding in a balanced manner.
The principle behind a bimetallic strip is that different metals expand to different extents with temperature changes. By combining two different metals one on top of another into a strip, a bimetallic strip is formed. As the two metals expand or contract differently under the same temperature change, the strip bends. It can then be used to switch on or off a circuit at certain temperatures. Bimetallic strips are often found in ovens.
For example, any video clips and answers to questions are missing. The formatting page breaks, etc of the printed version is unpredictable and highly dependent on your browser. This TLP is in three parts. The first part involves using the deflection of a cantiliver beam to measure the Young's Modulus of three materials. In the second part, the origin of thermal expansion in a solid is considered.