JoVE Logo

サインイン

第 18 章

応力とひずみ - 軸方向荷重

軸荷重下での垂直ひずみ
軸荷重下での垂直ひずみ
A rod subjected to a load undergoes elongation. A load-deformation diagram can represent the elongation but cannot predict deformation in different rods. ...
応力-ひずみ図
応力-ひずみ図
Consider a cylindrical specimen placed in a system to measure its tensile strength. Two gauge marks are inscribed on the central portion of the specimen. ...
応力-ひずみ線図 - 延性材料
応力-ひずみ線図 - 延性材料
When a specimen is subjected to loading the length first increases linearly at a slow rate, resulting in an initial straight line with a steep slope on ...
応力-ひずみ図 - 脆性材料
応力-ひずみ図 - 脆性材料
Brittle materials, under tensile stress, do not elongate much before rupturing, meaning their ultimate and breaking strengths are identical. Compared with ...
真応力と真ひずみ
真応力と真ひずみ
Engineering stress is the ratio of the load and the undeformed original cross-sectional area. Engineering stress approximates strain which represents the ...
フックの法則
フックの法則
Hooke's law states that stress applied to a material is directly proportional to the strain it experiences within the elastic limit. For ductile ...
プラスチックの挙動
プラスチックの挙動
Materials under stress due to tensile loading exhibit elastic and linear behavior until the yield point. Removing the load at the yield point, stress and ...
疲労
疲労
Fatigue occurs when the materials, under repeated loads for thousands or millions of cycles, rupture at a stress level much lower than the material's ...
多重荷重下での部材の変形
多重荷重下での部材の変形
The deformation of a rod with different materials and cross-sections is computed by dividing it into parts, each characterized by individual parameters. ...
静的不確定な問題解決
静的不確定な問題解決
Consider two cylindrical rods, one of steel and another of brass, joined at point B and restrained by rigid supports at points A and C. Determine the ...
熱ひずみ
熱ひずみ
A homogeneous rod with a uniform cross-section, resting freely on a horizontal surface, expands when heated. The expansion is proportional to the ...
温度依存変形
温度依存変形
Consider a non-homogenous rod made of steel and brass, restrained at both ends and subjected to a temperature change. The stress and load on the rod are ...
ポアソン比
ポアソン比
When a slender bar is subjected to an axial load, the bar material undergoes axial strain, causing it to deform in the axial direction. Simultaneously, ...
一般化フックの法則
一般化フックの法則
The generalized Hooke's Law extends Hooke's Law to all stress types and directions, aiding in understanding materials under multiaxial stress ...
体積弾性率
体積弾性率
The bulk modulus measures a material's resistance to uniform compression. It is defined as the proportionality constant between a change in pressure ...
せん断ひずみ
せん断ひずみ
In a cubic element with a general state of stress, the shearing stresses can deform a cube into an oblique parallelepiped without affecting normal ...
ポアソン比、弾性率、剛性係数の関係
ポアソン比、弾性率、剛性係数の関係
A slender bar subjected to an axial load undergoes deformation in the axial and transverse directions. The deformation affects the cubic elements within ...
サン・ヴナンの原理
サン・ヴナンの原理
Consider a member with plates on both ends. When loads are applied centrally on the plates, they move towards each other without rotating, causing the ...
応力集中
応力集中
Stress concentration refers to the amplification of stress in a structural member near points of discontinuity, such as holes or abrupt changes in ...
残留応力
残留応力
When a rod is stretched beyond its yield point, it permanently deforms and doesn't regain its original length. The stresses created during loading are ...
JoVE Logo

個人情報保護方針

利用規約

一般データ保護規則

研究

教育

JoVEについて

Copyright © 2023 MyJoVE Corporation. All rights reserved