What is Material mechanics: Definition and 16 Discussions
The field of strength of materials, also called mechanics of materials, typically refers to various methods of calculating the stresses and strains in structural members, such as beams, columns, and shafts. The methods employed to predict the response of a structure under loading and its susceptibility to various failure modes takes into account the properties of the materials such as its yield strength, ultimate strength, Young's modulus, and Poisson's ratio. In addition, the mechanical element's macroscopic properties (geometric properties) such as its length, width, thickness, boundary constraints and abrupt changes in geometry such as holes are considered.
The theory began with the consideration of the behavior of one and two dimensional members of structures, whose states of stress can be approximated as two dimensional, and was then generalized to three dimensions to develop a more complete theory of the elastic and plastic behavior of materials. An important founding pioneer in mechanics of materials was Stephen Timoshenko.
The IPK gradually lost microscopic amounts of mass despite not being of a weak material and being far from the platinum alloy’s (it is made of a platinum-iridium alloy) failure point. Why does this happen and what materials are immune to this? Is it only materials that are made of pure elements...
Hello everyone,
I need some help to calculate the force required to bend a tor steel bar of dia 20mm and 12 m long from the centre. I want to bend it like a hair pin and need to know how much force is exactly required to do so. Any help or resource would be great.
Regards,
Mradul
Homework Statement
Homework Equations
Singularity equations for beam deflection
$$\sum M_B=0=-M_0-R_AL-M_0$$
$$R_A=-\frac{2M_0}{L}$$
The Attempt at a Solution
I know how to use singularity equations and all that but my problem is calculating the force especially when moment is involved. For...
Working on a research project to develop a test standard for abrasion testing pressure washer hoses. Ideally this could be used on any sort of hose. We have a set procedure that has worked on a couple hoses that looks like this:
.Weight applied is constant
.Cycle speed is constant
.Constant...
Dear all,
As part of my MSc thesis I am using molecular dynamics simulation to study the pseudoelastic effect of Cu-Zr shape memory alloy during a tensile and shear tests. My question is related to the stress induced phase transformations during both tests.
During the tensile test I can...
I'm looking for a way to calculate the shear force applied to a brake pad from stopping ( a small engine brake pad stopping a fly wheel). I know shear stress is shear stress/ area , would this apply for a dynamic application as well? Would I need to calculate the force to stop the flywheel at a...
How do i find out yield application of hammer hitting a specimen (just like blacksmith did? Since tresca law stated yieldmaterial<yield application to make deformation of specimen, yield of material for example 100MPa (high tempt yield) but yield application=F/A (assume force given is 600Newton...
I am studying the following phenomenon for my project:
Thin horizontal elastic rod is fixed at both ends and small perpendicular force is applied at middle of the rod perpendicular to its length. I want to study this dynamics and extend it to cylindrical shell. Please suggest books/papers or...
Hi,
I want to ask the shoulders that are used on railway tracks concrete sleepers, should they be forged or ductile cast and why?
If someone can post an article it'll be great.
Thank You for your help and support.
Hi
I want to ask which of the cast steels or forged steels provide with better shock absorption?
The component has to be used in the under chassis of heavy trucks in bumpy roads.
Can anyone help me with that?
Thank You
TERMS:
Slip Plane: is the plane that has the densest atomic packing—that is, has the greatest planar density.
Slip Direction: corresponds to the direction in this plane that is most closely packed with atoms—that is, has the highest linear density.
TEXTBOOK: Materials Science and Engineering...
I am working on a project for which we have to design a Light weight tricycle. I want to know the procedure for selecting a light weight material for the chassis, which has good stiffness, economically available and good weld ability. We also have no constraints on the cross section of the pipes...
Anyone given thought to the mechanism(s) of the cracks in the Belgian RPVs? In normal circumstances, I personally have clues based upon experience. The material neutron bombarded for a number of years gives that all a twist. So...Anybody?
1. Problem statement
A steel rod supporting a stress of 8000 psi at 1000 ◦ F is not to exceed 5 % creep strain. Knowing that the steady-state creep rate can be expressed by an equation of the form
##\dot{\epsilon}_{s}^{C}=B|\sigma |^{n} exp \left(\frac{-Q}{kT} \right)##
ε⋅, strain rate
B...
Homework Statement
A circular profile with radius r is subjected to opposing compressive forces Fc in the x and y directions as show. If the material has compressive strength sigma_c = 2000MPA, at what compressive force Fc will the profile experience failure?
Homework Equations...