Questions tagged [deformation]
The deformation tag has no usage guidance.
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Ansys Mechanical Section Plane Error
I'm attempting to make a deformation analysis for a specific scenario in Ansys Mechanical. Everything seems to be fine, but when I try to use a section plane, the deformed region appears to be 'hollow,...
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Creep of the materials
Does creep exists for all materials at any stress at room temperature? I searched for this and could not find any answer other than creep isn't significant at low stresses and low temperatures. What I ...
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Describing 180 degree arcing/deflection of wire supported vertically at one end
I am trying to understand how to describe and calculate the shape a length of piano wire makes from its own weight when supported vertically at only one end. Is it a catenary or a parabola? ...
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Calulating the compression deformation using strain data measured by strain gauge _ material engineering
I'm studying material engineering and conducting some experiment.
The experiment was measuring the strain of long steel bar.
The bar is compressed from left side and deformed shortened.
Using strain ...
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Beyond the codes maximum deflection in primary Aluminum beam
we had a alum pool enclosure built that has a primary beam carrying the roof trusses across it's length. the primary beam is a 4x8 bx beam spanning 43'between supports.
the beam has started to show ...
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Maximum Deflection for simply supported beam under arbitrary triangular loading
I am trying to get the:
maximum deflection
location of maximum deflection
deflection at any point
For a beam under an arbitrary triangular load (i.e. a, b, c, and w can vary). I tried to solve this ...
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Can stress tensor be defined on feature edges?
Assume a rod is being extruded out of a cylinder by pushing the cylinder into a hole (See Figure below).
Do the feature edges (or corners in 2D) cause the traction (the surface force) to be ...
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How to calculate the spring force of a rolled piece of steel?
If you have a steel sheet and then curled it to the point of being a semi-circle with a 30 degree (pi/6) gap from completion (...
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Rotation Matrix for a Stress Tensor Matrix
In my engineering mechanics course, I came across the following rotation matrix, for a stress tensor, for a counter-clockwise rotation.
However, this is completely different, actually a transpose of ...
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What would happen if we applied a stress greater than the yield stress to a rigid-perfectly plastic material?
Say we had a material that was rigid perfectly plastic, with a stress-strain characteristic as shown:
Say that we are drawing this material through two dies, something like this:
What would happen ...
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Should the stiffness of this cantilever beam be different for these two conditions?
So, I was just doing some Finite Element Analysis (FEA) to figure out what would be the effect on the stiffness of a cantilever beam if another beam is attached to it on its free end.
Below shows the ...
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Is it possible to calculate the strains applied by a force on a molecule? [closed]
This question was originally in the Physics site, but the moderator believed it was better suited for this site. Hence, I am following the advice.
Is it feasible to obtain the modulus of elasticity ...
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How they derive The Green strain tensor?
in this paper
they give the deformation tensor and the green lagrange tensor without explanation
i have some difficulties with tensor calculus ,Especially dyadic product
can some one explain it in ...
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Will A Material Plastically Deform If you Slowly Apply a Strain That Would Normally Exceed Its Ultimate Tensile Strength
Lets I have a material with ultimate tensile strength $S_{UTS}$.
Lets say $S_{UTS}$ is produced by strain $\epsilon_{UTS}$
My question is, if the material is strained such that it achieves $\epsilon_{...
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Is the calculated shear strain in a beam, engineering strain or tensorial strain?
Recently I came across a FEM code of a linear deformation beam element, and it made me wonder what is the correct relation between shear stress and shear strain in a beam element.
In the beam element ...
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Applying forces from the inside of a bar
I was reading Schaum's Outline: Strength of Materials (fifth edition) when I came across this solved example problem from the Tension and Compression chapter:
The solution was clear to me, however ...
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Model for dynamic plate deformation
I would like to gather ideas to model the dynamic behaviour of a plate with variable thickness. The assumption are:
Small deformations.
The plate is all made of the same material with variable ...
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How to measure the stiffness of a rectangular beam, and compare it to a triangular beam?
I'm an amateur at engineering, working more on musical instruments, and I'm often in confusion regarding what exactly constitutes stiffness of a beam for a load applied on it so it could resist ...
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deformable object squeezing
I have the problem following. There is a deformable sphere with radius r. It goes inside a constriction channel with d*d cross section. Assuming that the sphere volume is constant and the sphere shape ...
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How to calculate the adhesion I need to keep a 3D printed bending part straight?
3D printed parts cool down during printing, resulting in thermal contraction which causes a bending moment and separation from the printing bed.
The issue is solved by increasing adhesion to the ...
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Calculating the bending moment ($M$) of a beam as it relates to stress ($σ$) and strain ($ε$)?
I am trying to learn how to work out the bending moment for progressively complex systems to model a beam. I am assuming only one axis of motion (transverse = $y$).
For the basic equation of material ...
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Quantifying the amount of structural/hysteretic vibrational damping that occurs in proportion to deformation? (ie. Based on how "bent" something is?)
Three different conceptual types of vibrational damping forces are described here:
Viscous: $f(t) = -c \cdot v$
Coulomb: $f(t) = -c \cdot \text{sgn}(v)$
Structural: $f(t) = -c \cdot |x| \cdot \text{...
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Yield properties of plastic material
What is meant by yield of isotropic plastic material?
How is yield of Isotropic plastic material different from the term normal yield which is referred as transition from elastic behaviour to plastic....
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How can I describe cold work and atomic structure?
A copper wire (42 cm x 0.25 cm diameter) twisted to failure did not change its dimensions significantly. How can I visualize or quantify the cold work done (tensile at the exterior, compressive in the ...
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Deformation and stress in moment of hit (Ansys)
This how task goes: i need to find deformation and stress of piston in moment of hit between piston and tool (tool is stationary). Velocity of a piston is (5-7 m/s) and forces are in picture below.
I ...
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what is issue with my room brick wall? How can i solve it?
I have seen a sort disformation on wall of my room I have attached snapshot of both inside view(from inside room) and out side view(that is out of room)
inside view is below
out side view is below
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what is the range of the measurable relative elasticity with a commonly used strain gauge
I'm looking for a data that what is the typical application range for a common uni directional strain gauge like used in weight scales?
I've read about around 200 ppm in a research gate article, can ...
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Why torsional warping does not occur for shafts with circular symmetry?
When we twist a shaft/beam/rod, shearing stresses are produced. The angle by which the end of the shaft rotates can be found as:
$${\displaystyle \theta ={\frac {TL}{GJ}}}$$
where $T$ is torque, $L$ ...
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Why is tensorial shear strain half of engineering shear strain?
Small deformation shear strain $\gamma$ in engineering can be expressed as
$$\gamma_{xy}=\alpha +\beta ={\frac {\partial u_{y}}{\partial x}}+{\frac {\partial u_{x}}{\partial y}}$$
where $u$ ...
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Calculate Rolling Resistance Experimentally
I am trying to calculate the exact rolling resistance ($F_{rr}$) of my car. The approach I am going with is a coastdown test at a low speed so no drag slows down the car. From there I am going to ...
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Displacement of Gaussian point after structure simulation
When we did the simulation, we would get deformation and got each nodes displacement.
In physics, it shows the trajectory of a system of particles of the objects.
Is it the same as the displacement ...
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Understanding plastic deformation
Is understanding tensors a prerequisite for understanding plastic deformation (metal forming) equations, plane stress, plane strain conditions, etc..? If so which book should I use to understand ...
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What degree of open span/narrow support can rigid PIR thermal insulating foam sustain under the short term load of setting concrete?
I've found data related to the deformation and shear performance of typical PIR (polyisocyanurate) foams such as Celotex/Kingspan, but I'm not sure how to use these figures in my own situation.
I am ...
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Deflection of a stack of disks under applied force/pressure
I'm trying to calculate the deflection of a stack of metallic disks, when subjected to a force.
In the case of the figure below, representing a valve for a shock absorber, the force is due to a ...
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Springback after a plastic deformation
Before the yield point, the deformation is elastic, and then it is plastic. But what happens to the elastic 'part' of strain after the load is removed? Is it retracted fully or partly, and how does ...
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deformation / bending problem with anodized aluminium panels
I recently had a machine shop machine some aluminium panels (3mm thickness) which I then sent to an anodizing shop where the panels were bead blasted and anodized. When they came back they were ...
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Beam deformation under trapezoidal load
Can somebody help me find the equation for the deformation of a simply supported beam under trapezoidal load (with intensity Q1 and Q2, at starting point X1 and end point X2)?
I am trying to find it ...
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How to calculate a global strain from a field disitribution
For an arbitrary articulated structure subject to non-affine (non homogeneous) deformations, the components of the strain tensor are defined locally. Is there a way to calculate a numerical strain ...
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Behavior of materials on application of tension
Does a test body subjected to a strain that causes plastic deformation still have elastic recovery?
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Increasing the stiffnes of a structure by adding stiffener, but at the same time reducing main surface thickness
Let's say I'm designing a table surface which has to be stiff, rigid, but at the same time, not too heavy. It is rectangular in shape and ratio of length:width is quite large. It is only supported on ...
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Computing strain in beams
I am studying this problem:
The rigid bar ABC shown in Fig. P-212 is hinged at A and supported by a steel rod at B.
Determine the largest load P that can be applied at C if the stress in the ...
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Is there an standard description for deformation at each point on a body?
I'm trying to come up with a way to describe deformation on a body at each point on that body. My problem can be expressed and solved in two dimensions. Given two triangles, one being the initial ...
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Possibility of buckling in non-slender member?
The above diagram is misleading. In reality, both the length and thickness are equal to 8mm. As this is from a past paper (one notorious for awkward questions), I'm not sure if it's a typo (an 8m ...
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Can I inject plastic in a RTV mould?
Can I inject plastic in a RTV mould?
Will the interior of the mould get deformed by pressure?
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Difference between 'plastic yielding' , 'plastic yield strength', plastic strength' and 'plastic stress'?
I am going through a literature where these terms are regularly used and I am confused are they different and if yes then what does each term mean?
I also want to know relation of plastic strength of ...
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Finding initial length of a bended plastic sheet (Bend Allowance)
I have a 1.5 mm thick plastic sheet part which hast to be bent at a joint 0.3 mm thick by ~ 10 Deg. I know (found from design drawing) compressed and stretched lengths of the joint. How can I find the ...
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Solid mechanics: Deflection of a rectangular elastic membrane
I am trying to solve for the deflection $w$ of a rectangular membrane with tension $T$ acting on two opposite edges. These two edges are fixed i.e. $w = 0$. The other two opposite edges are free. The ...
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Deformation gradient, strain tensor from cylindrical coordinates
I do not have any engineering background but I am studying some mathematics to try and understand and solve this problem. I have a mesh (M1) in cylindrical coordinates and this deforms into a mesh (M2)...
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Wheel rolling resistance
I think that some of you know what is rolling resistance. It is force that works in opposite direction to roll and is caused due to deformation of tire. It also affects car wheels.
There is one ...
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Material selection for weight scale
I am looking to test the FlexiForce sensor in measure force, however for accurate readings the load needs to be disturbed evenly over the sensing area. As such I am having "discs" made to cover the ...
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