How to output ultra static pore water pressure in Abaqus

1.The equivalent stress, relative to the stress tensor, is magnitude below the root number (the sum of the squares of each deviator stress component). There are a total of 9 stress components, and the deviating stress component is the stress component minus the stress component of the hydrostatic part.

2.The total stress is the sum of the effective stress and the pore water pressure. Among them, the effective stress is the intergranular stress, and the stress transmitted only through the contact point of the soil particles will make the soil particles squeeze each other, thereby causing soil deformation. The force transmitted by pore water is known as pore water pressure.

Stress is an equivalent stress based on shear strain energy, and its value is .

a1-a2)^2+(a2-a3)^2+(a3-a1)^2)/2)^

where a1, a2, and a3 refer to the first.

One, two, and three principal stresses, 2 denotes the square, denotes the square. It is the fourth intensity theory and also the distortion energy density theory. This theoretical task distortion energy density is the main factor causing the material to yield. When the mises stress reaches the yield stress value, the material yields.

von mises is a yield criterion, and the value of the yield criterion is usually called the equivalent stress. Ansys post-processing"von mises stress"We are accustomed to calling it mises equivalent stress, which follows the fourth strength theory of material mechanics (the theory of specific energy for shape change).

von mises stress is indeed an equivalent stress force, which uses stress contours to represent the stress distribution within the model, which can clearly describe the variation of a result across the model, so that the analyst can quickly identify the most dangerous areas in the model.

When an object is deformed due to external factors (force, humidity, temperature field changes, etc.), an internal force that interacts with each other is generated between the parts of the object to resist the action of this external factor and try to restore the object from the deformed position to the position before the deformation.

The internal forces per unit area at a certain point of the cross-section under investigation are called stresses. Those perpendicular to the same cross-section are called normal stresses or normal stresses, and those tangent to the same cross-section are called shear stresses or shear stresses.

There is no point in asking such a question.

It is advisable to go down and check the information yourself.

The load is defined by physical force is the superstatic pore water pressure, and the total pore water pressure is defined by gravity.

1.The equivalent stress, relative to the stress tensor, is magnitude below the root number (the sum of the square acres of each deviator stress component). There are a total of 9 stress components, and the deviator stress component is the pure force component of the stove to be dismantled minus the stress component of the hydrostatic pressure part.

2.The total stress is the sum of the effective stress and the pore water pressure. Among them, the effective stress is the intergranular stress.

Double-point multiplication, see Tensor Analysis textbook for details.

Write in quantitative form:

Single-point multiplication: s*s is equivalent to sij*sjk, and the result is a first- and second-order tensor double dot multiplication: s:s is equivalent to sij*sji, and the result is a scalar.

Double-point multiplication, see the Arbitrary Tensor Analysis textbook for details.

Write in quantitative form:

Single-point multiplication: s*s is equivalent to sij*sjk, and the result is a first- and second-order tensor double dot multiplication: s:s is equivalent to sij*sji, and the result is a scalar.

This is the pressure in the load module, and then select Hydrostatic in the Distribution section

There is an icon with an exclamation mark in the upper right corner of abaqus, that is, a query icon, which allows you to select a node to query the stress of any point.

abaqus is a powerful finite element software for engineering simulations that solves problems ranging from relatively simple linear analyses to many complex nonlinear problems. abaqus has a rich library of elements that can be used to model arbitrary geometries. And has a library of various types of material models, which can simulate the performance of typical engineering materials.

ABAQUS is widely regarded as the most powerful finite element software for the analysis of complex solid mechanics structural mechanics systems, especially for handling very large and complex problems and simulating highly nonlinear problems. ABAQUS can perform mechanics, multiphysics analysis, and system-level analysis of a single component.

The features of Abaqus' system-level analysis are unique to other analysis software. Due to its excellent analytical capabilities and reliability in simulating complex systems, Abaqus has been widely adopted by industry and research in various countries. Abaqus products play a huge role in a large number of high-tech product research.

There is an icon with an exclamation mark in the upper right corner, that is, the query icon, which allows you to select a node to query the stress at any point.

Tools - Query - Query Value - Query drop-down box to select the node - select the node in the cloud map - click to view the value.

abaqus has a very user-friendly query function, query, on the menu bar, you can query displacement, stress, distance, node number, element type and other information. Try it, and a miracle will happen.

load:--pressure --distribution,select hydrostatic

Enter an amplitude. Then enter the position where the pressure is zero, and the position where the end point is. Note that the position of the end point should be close to the coordinate origin.

In the 3D case, the positions of the zero and end points are the positions of the points on the z-axis.

A two-dimensional case, which is the position on the y-coordinate.

For example, in the case of 3D, the pressure of a certain surface changes from 0-10, and the Z-coordinate value of the surface is 5-20

Then the case of the input is:

Amplitude: 10 Zero coordinates: 20

End coordinates: 5

CATIA was modeled and imported into Abaqus to simulate the fall. According to the moment of falling, the energy curve and the displacement change of the material rack are obtained, and the bottom structure of the material rack is optimized according to the results to achieve the best performance.

The corresponding meaning is as follows.

le: true strain (or logarithmic strain).

Leij: True strain, back strain component.

PE: plastic strain component.

peeq: equivalent.

Answer: Plastic strain.

ABAQUS includes a rich library of elements that can model arbitrary geometries and has a library of various types of material models to simulate the performance of typical engineering materials.

In ABAQUS, PE, LE and PEEQ mean LE --- true strain bai (or logarithmic strain), respectively; PE--- plastic strain variable component; PEEQ --- equivalent plastic strain.

Zhiabaqus includes a rich library of cells that can model arbitrary geometries. It has a library of various types of material models that can simulate the performance of typical engineering materials, including metals, rubbers, polymers, composite materials, reinforced concrete, compressible hyperelastic foams, and geological materials such as soil and rock, as a universal simulation tool.

Lej--- true strain. strain components; PE: plastic strain component. PEEQ --- equivalent plastic strain.

le--- true strain (or logarithmic strain) leij--- true strain...strain components;

PE: plastic strain component.

PEEQ --- equivalent plastic strain.