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Elastic modulus print that page

An elastic modulus , or modulus of elasticity , is the mathematical description of an object or substance's tendency to be deformed elastically (i.e., non-permanently) when a force is applied to it. The elastic modulus of an object is defined as the slope of its stress-strain curve in

wikipedia.org | 2011/5/15 0:27:43

Shear modulus print that page

In materials science , shear modulus or modulus of rigidity , denoted by G , or sometimes S or μ , is defined as the ratio of shear stress to the shear strain : [ 1 ] where = shear stress; F is the force which acts A is the area on which the force acts in engineering, = shear

wikipedia.org | 2011/7/19 4:00:11

Iso-elastic print that page

Instead, an iso-elastic system is employed. The springs used are large, stiff springs with a high modulus of elasticity , and they are highly tensioned. A compound pulley system is then used so that the large force exerted by the spring can be divided by a factor of (say) five. The cable

wikipedia.org | 2011/5/3 1:16:59

History of structural engineering print that page


The history of structural engineering dates back to at least 2700 BC when the step pyramid for Pharaoh Djoser was built by Imhotep , the first engineer in history known by name. Pyramids were the most common major structures built by ancient civilisations because it is a structural form

Interval finite element print that page


The interval finite element method (interval FEM) is a finite element method that uses interval parameters. Interval FEM can be applied in situations where it is not possible to get reliable probabilistic characteristics of the structure. This is important in concrete structures, wood structures

Young's modulus print that page

Young's modulus is a measure of the stiffness of an elastic material and is a quantity used to characterize materials. It is defined as the ratio of the uniaxial stress over the uniaxial strain in the range of stress in which Hooke's Law holds. [ 1 ] In solid mechanics , the slope of

wikipedia.org | 2011/8/18 14:08:14

Elastic energy print that page

The concept of elastic energy is not confined to formal elasticity theory which primarily develops an analytical understanding of the mechanics of solid bodies and materials [ 1 ] :See Ch 1 §1 . The essence of elasticity is reversibility. Forces applied to an elastic material transfer energy

wikipedia.org | 2011/6/7 22:18:37

Fracture mechanics print that page


In modern materials science , fracture mechanics is an important tool in improving the mechanical performance of materials and components. It applies the physics of stress and strain , in particular the theories of elasticity and plasticity , to the microscopic crystallographic defects

Strength of materials print that page

ultimate) strength. For example failure in buckling is dependent on material stiffness (Young's Modulus ). Contents 1 Types of loadings 2 Definitions 2.1 Stress terms 2.2 Strength terms 2.3 Strain (deformation) terms 3 Stress-strain relations 4 Design terms 4.1 Failure

wikipedia.org | 2011/8/19 7:26:53

Yield (engineering) print that page

, so the stress-strain graph is a straight line, and the gradient will be equal to the elastic modulus of the material. Elastic limit (yield strength) Beyond the elastic limit, permanent deformation will occur. The lowest stress at which permanent deformation can be measured. This requires

wikipedia.org | 2011/9/2 7:00:31