![]() ![]() As the car accelerates forward, you would feel a force pushing you back into your seat. Another example of this is the experience of a passenger in an accelerating car. This is because acceleration is, in turn, always associated with some unbalanced (net) force on a body. Inside the train, you can tell that your velocity has changed because you can feel the acceleration manifested as an unbalanced force on your body. When calculating according to the geometrically linear analysis (first-order), the equilibrium is analyzed on an undeformed structural system. A change in velocity is always caused by an acceleration. You may start moving vertically a bit upwards after hitting the bump and then downwards again due to gravity. If you hit a bump, your velocity changes. ![]() You, and the coffee, are in static equilibrium. The three chassis will undergo analysis test that consists of five tests which are main roll hoop test, front roll hoop test, static shear, side impact, static torsional loading and finally one of them will be selected as the best design in term of Von Mises Stress and torsional displacement. You can comfortably enjoy a nice cup of hot coffee without spilling it all over yourself (again, unless you hit a bump). If you are sitting in a train, moving at constant velocity, it feels just like you are sitting still (except for any bumps in the road that momentarily change your velocity). ![]() #STATIC STRUCTURAL ANALYSIS EXAMPLES SOFTWARE#Why is this the case? According to relativity (Einstein), it is not possible to tell if an object is moving or not from the point of view of an observer on the object if that object is moving at a constant velocity. ME 24-688 Introduction to CAD/CAE Tools Lecture Topics Finite Element Analysis (FEA) Overview FEA Parameters FEA Best Practices FEA Software Introduction Linear Structure Analysis. This means that it is moving at a constant velocity. Technically, a body (or structure) is in static equilibrium if it is not accelerating. >When you're done reading this section, check your understanding with the interactive quiz at the bottom of the page. ![]()
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