The Research Of The Method About Metal Flat's Yang's Elastic Modulus According To The Stroke Time Detecting Of Flexible Body

Yang's Elastic Modulus is a kind of physical parameter which reflects the relation between the shape change and the inside stress of a kind of material, and it's a kind of technical parameter which is often used in engineering technology. Now there are two kinds of methods which are often used in the measure of Yang's elastic modulus inside or outside the nation : pulling in static state and dynamics detecting. And in the base of these two methods, many other assistant methods have been joined such as the electromotive detecting, the light detecting and the sound detecting. But all of these methods above should sampling and slice up on the material, so there are all belong to waste detecting.This text puts forward a method to detect the Yang's Elastic Modulus making use of the microprocessor at the basis of flexible mechanics. And this is a kind of no waste measure.The stroke of elastomer (collision) is a kind of familiar physical phenomenon. And the mechanics field has already done an important theories research to this topic. The stroke process carries on very quickly, and the variety of the stroke force, so it seems like having more difficulty to detect the stroke time accurately. However, the precise measurement of the stroke time, which has very important applied value to the research of the material's matter and structure, is the key job of studying the stroke phenomenon.This text sets out from the flexible mechanics theory, deduces the academic calculation formula of collision time between two balls first, and then between a ball and a metal flat, and in the end deduces the academic calculation formula of the Yang's elastic modulus on the contrary. It also designs a stroke former of elastic body, and puts forward a usage to measure the stroke time precisely by microprocessor MCS-51, and gained the Yang's elastic modulus of the plate. In the end this text analyses and contrasts the experimental result. The conclusion is that the experimental result gained by this detecting method has better relativity to the Yang's elastic modulus of the metal plate detected, which proves that this method has very important value to the research of the material's matter and structure.