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Yield stress anomaly print that page

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Stress analysis print that page

The aim of the analysis is usually to determine whether the element or collection of elements, usually referred to as a structure, can safely withstand the specified forces. This is achieved when the determined stress from the applied force(s) is less than the ultimate tensile strength , ultimate

wikipedia.org | 2011/7/12 9:29:41

Abiotic stress print that page

FoodWeb

stress causes the most crop loss of any other factor and that most major crops are reduced in their yield by more than 50% from their potential yield . [ 9 ] It has also been speculated that this yield reduction will only worsen with the dramatic climate changes expected in the future.

Environmental stress cracking print that page

Crazes1

causing swelling which increases the polymer ’s chain mobility. The result is a decrease in the yield stress and glass transition temperature (T g ), as well as a plasticisation of the material which leads to crazing at lower stresses and strains. [ 3 ] [ 1 ] A second view is that the

Yield print that page

Yield From Wikipedia, the free encyclopedia Jump to: navigation , search Look up yield in Wiktionary , the free dictionary. Yield in science, mathematics, and engineering: Yield (casting) , the ratio of usable casting to scrap by weight Yield (chemistry) , the amount

wikipedia.org | 2011/2/19 9:25:27

Yield (engineering) print that page

The yield strength or yield point of a material is defined in engineering and materials science as the stress at which a material begins to deform plastically . Prior to the yield point the material will deform elastically and will return to its original shape when the applied stress

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

Shear stress print that page

Shear_stress

A shear stress , denoted ( Greek : tau ), is defined as the component of stress coplanar with a material cross section. Shear stress arises from a force vector perpendicular to the surface normal vector of the cross section. Normal stress , on the other hand, arises from a force vector

Viscoplasticity print that page

Creep_test

represents non-linear dashpot [σ(dε/dt)= σ = λ(dε/dt) (1/N) ]. The sliding element can have a yield stress (σ y ) that is strain rate dependent, or even constant, as shown in Figure 1c. Viscoplasticity is usually modeled in three-dimensions using overstress models of the Perzyna

Von Mises yield criterion print that page

The von Mises yield criterion [ 1 ] suggests that the yielding of materials begins when the second deviatoric stress invariant J 2 reaches a critical value k . For this reason, it is sometimes called the J 2 - plasticity or J 2 flow theory. It is part of a plasticity theory that applies

wikipedia.org | 2011/8/17 0:25:32

Hill yield criteria print that page

The quadratic Hill yield criterion [ 1 ] . has the form Here F, G, H, L, M, N are constants that have to be determined experimentally and σ i j are the stresses. The quadratic Hill yield criterion depends only on the deviatoric stresses and is pressure independent. It predicts the

wikipedia.org | 2010/9/26 22:06:32