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Chapter 20

Bending

굽힘
굽힘
Pure bending occurs when a prismatic member possesses a plane of symmetry and experiences couples of equal magnitudes acting within that plane. This type ...
굽힘의 대칭 부재
굽힘의 대칭 부재
Consider a prismatic member subjected to two couples, equal in magnitude but in opposite directions, acting within the symmetric plane of the member. A ...
굽힘 시 대칭 부재의 변형
굽힘 시 대칭 부재의 변형
Consider the deformations of a symmetric prismatic member subjected to equal and opposite couples. As the member bends uniformly, the lines on the wider ...
굴곡 스트레스
굴곡 스트레스
Consider a bending moment where a symmetric member endures stress within the elastic limit. The longitudinal stress can be expressed using Hooke's ...
횡단면의 변형
횡단면의 변형
When a material is subjected to uniaxial stress, the material undergoes elongation or contraction in the direction of the applied stress. At the same ...
재료 굽힘: 문제 해결
재료 굽힘: 문제 해결
Consider two metallic pipes having an inner radii of 1.5 cm and 1 cm, respectively, and an outer radii of 1.8 cm. If both pipes can withstand a maximum ...
여러 재료로 만들어진 부재의 굽힘
여러 재료로 만들어진 부재의 굽힘
Consider a member of two different materials that have the same cross-sectional area. The equation of stress for such a member is expressed in terms of ...
스트레스 집중
스트레스 집중
The equation for stress for a member under pure bending having a plane of symmetry and a uniform cross-section assumes that the stress is evenly ...
소성 변형
소성 변형
For pure bending, when maximum stress exceeds the yield strength of the member's material, it undergoes plastic deformation. The strain at any point ...
탄소성 재료로 만들어진 부재
탄소성 재료로 만들어진 부재
Consider a member made up of an elastoplastic material with a rectangular cross-section. Within the elastic limit, the stress distribution across the ...
단일 대칭 평면을 갖는 부재의 소성 변형
단일 대칭 평면을 갖는 부재의 소성 변형
Consider a member experiencing plastic deformation due to bending and having one plane of symmetry. The stresses are uniformly distributed above and below ...
굽힘 시 잔류 응력
굽힘 시 잔류 응력
If a sufficiently large bending moment is applied to an elastoplastic member, plastic zones will develop in the member. Now, if the bending moment is ...
대칭 평면의 편심 축 하중
대칭 평면의 편심 축 하중
Eccentric axial loading refers to the application of an axial load that is not aligned with the centroidal axis of the member. Consider a member having a ...
비대칭 굽힘
비대칭 굽힘
Unsymmetric bending occurs when the bending moment is not acting along the plane of the symmetry of the member or if the member does not possess any plane ...
비대칭 굽힘: 중립축의 각도
비대칭 굽힘: 중립축의 각도
Consider a member with a vertical plane of symmetry subjected to bending couples in a plane at an angle θ with respect to the vertical axis of the ...
편심 축방향 하중의 일반적인 사례
편심 축방향 하중의 일반적인 사례
Consider a member subjected to equal and opposite eccentric forces. These forces are applied at a horizontal distance of a and a vertical distance of b ...
곡선형 부재의 굽힘: 변형률 분석
곡선형 부재의 굽힘: 변형률 분석
Consider a curved member having a transverse section symmetric with the y-axis. Its upper and lower surfaces intersect with xy-planes along arcs of ...
곡선형 부재의 굽힘: 중립 표면
곡선형 부재의 굽힘: 중립 표면
For a curved member with a uniform cross-section, the strain equation along the section shows that it varies non-linearly with the distance from the ...
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