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古德曼曲线（英語：Goodman diagram）指受交变应力的零件，在等寿命（等破环循环次数）的条件下，其平均应力与最大应力和最小应力的关系曲线。
, Within the branch of materials science kno … Within the branch of materials science known as material failure theory, the Goodman relation (also called a Goodman diagram, a Goodman-Haigh diagram, a Haigh diagram or a Haigh-Soderberg diagram) is an equation used to quantify the interaction of mean and alternating stresses on the fatigue life of a material. The equation is typically presented as a linear curve of mean stress vs. alternating stress that provides the maximum number of alternating stress cycles a material will withstand before failing from fatigue. A scatterplot of experimental data shown on an amplitude versus mean stress plot can often be approximated by a parabola known as the Gerber line, which can in turn be (conservatively) approximated by a straight line called the Goodman line.y a straight line called the Goodman line.
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Within the branch of materials science kno … Within the branch of materials science known as material failure theory, the Goodman relation (also called a Goodman diagram, a Goodman-Haigh diagram, a Haigh diagram or a Haigh-Soderberg diagram) is an equation used to quantify the interaction of mean and alternating stresses on the fatigue life of a material. The equation is typically presented as a linear curve of mean stress vs. alternating stress that provides the maximum number of alternating stress cycles a material will withstand before failing from fatigue.ill withstand before failing from fatigue.
, 古德曼曲线（英語：Goodman diagram）指受交变应力的零件，在等寿命（等破环循环次数）的条件下，其平均应力与最大应力和最小应力的关系曲线。
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Goodman relation
, 古德曼曲线
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