[{"data":1,"prerenderedAt":33},["ShallowReactive",2],{"topic-en-strength-of-materials\u002Fbasic-concepts-and-types-of-deformation\u002Fstrength-stiffness-and-stability":3},{"topic":4,"trail":18,"children":28,"tasks":29,"alternates":30},{"id":5,"name":6,"locale":7,"path":8,"seo_title":9,"seo_description":10,"seo_text":11,"content_html":12,"content_chunks":13},155,"Strength, Stiffness and Stability","en","strength-of-materials\u002Fbasic-concepts-and-types-of-deformation\u002Fstrength-stiffness-and-stability","Strength, Stiffness and Stability of Structures","Three fundamental structural performance requirements: strength, stiffness, and stability, their differences and engineering meaning.","This topic distinguishes strength, stiffness, and stability and explains why a structure can be strong enough yet unacceptable because of excessive deformation or loss of equilibrium stability.","\u003Cdiv class=\"definition-chunk\">\u003Cp>\u003Cstrong>Strength of Materials\u003C\u002Fstrong> is an engineering discipline that studies deformable structural members under loads and provides methods for assessing their strength, stiffness, and stability.\u003C\u002Fp>\u003Cul>\u003Cli>\u003Cstrong>Strength\u003C\u002Fstrong> is the ability of a member to resist loading without failure or unacceptable permanent deformation.\u003C\u002Fli>\u003Cli>\u003Cstrong>Stiffness\u003C\u002Fstrong> is the ability to limit deformations and displacements to acceptable values.\u003C\u002Fli>\u003Cli>\u003Cstrong>Stability\u003C\u002Fstrong> is the ability to preserve a given equilibrium configuration and avoid a sudden transition to another configuration under load.\u003C\u002Fli>\u003Cli>\u003Cstrong>Deformation\u003C\u002Fstrong> is a change in the shape and\u002For dimensions of a body caused by loading, temperature, or other effects.\u003C\u002Fli>\u003Cli>\u003Cstrong>Displacement\u003C\u002Fstrong> is a change in the position of a point or cross-section of a body in space.\u003C\u002Fli>\u003C\u002Ful>\u003C\u002Fdiv>\u003Ch2>Three different checks\u003C\u002Fh2>\u003Cp>\u003Cstrong>Strength\u003C\u002Fstrong> concerns failure or an unacceptable material state. \u003Cstrong>Stiffness\u003C\u002Fstrong> limits deformation and displacement even when strength is adequate. \u003Cstrong>Stability\u003C\u002Fstrong> concerns the ability to preserve the intended equilibrium configuration.\u003C\u002Fp>\u003Ch2>Why strength alone is not enough\u003C\u002Fh2>\u003Cp>A beam may have acceptable stresses but excessive deflection. A slender compressed member may buckle at stresses below those associated with material failure. The governing performance criterion therefore depends on the structure and loading.\u003C\u002Fp>\u003Ch2>Engineering approach\u003C\u002Fh2>\u003Cp>Real designs often require several checks simultaneously. Later topics provide the equations used for these checks.\u003C\u002Fp>",[14],{"id":15,"code":16,"type":17,"locale":7},134,"som-basic-concepts-en","definition",[19,23,27],{"id":20,"name":21,"path":22},45,"Strength of Materials","strength-of-materials",{"id":24,"name":25,"path":26},142,"Basic Concepts and Types of Deformation","strength-of-materials\u002Fbasic-concepts-and-types-of-deformation",{"id":5,"name":6,"path":8},[],[],{"en":31,"uk":32},"https:\u002F\u002Fmechclassroom.com\u002Fen\u002Ftopics\u002Fstrength-of-materials\u002Fbasic-concepts-and-types-of-deformation\u002Fstrength-stiffness-and-stability","https:\u002F\u002Fmechclassroom.com\u002Ftopics\u002Fopir-materialiv\u002Fosnovni-poniattia-ta-vydy-deformatsii\u002Fmitsnist-zhorstkist-stiikist",1787712538189]