전체 글 24

Saint-Venant Principle (생-배낭 원리)

▶Saint-Venant's Principle (생-배낭 원리) "Stress distribution in the cross section at a distance greater than the width of material from load point is uniform." 재료의 너비보다 멀리떨어진 위치에서의 단면에 작용하는 응력분포는 균일하다. Let's assume following rod. The rod is imposed by force so that the axial stress occurs to resist the load. The guy who only has learned axial stress and strain could say "The stress in the section of..

Stress/Strain/Hooke's law/Poisson's ratio(응력/변형률/후크의 법칙/푸아송비)

▶Stress/Strain/Hook's law/Poisson's ratio/Plane element/Iso element (응력/변형률/후크의 법칙/푸아송비) Stress (응력) Stress are the internal force in a element resisting the deformation. Assume that you let your cell phone on the table and push the phone vertically. If you pushed the phone with force as much as not destroy the phone, the phone maintain itself becasue it resists your push force. The force resist..

Load definition for beam elements (빔 요소의 하중 정의)

▶Load definition for beam elements (빔 요소의 하중 정의) Generally the beam elements mean the slender material longitudinally. It means the longitudinal length of material is longer than section area of the material. It is called slenderness ratio or aspect ratio. https://en.wikipedia.org/wiki/Slenderness_ratio These type beams have been used as material for construction like main structure for skyscrap..