Abaqus - Basic

 

1. Units

量纲

Dimension

单位Units

Kg-m-s

单位Units

Kg-mm-s

单位Units

T-mm-s-Mpa

单位Units

g-mm-s

长度$L$

$m$

mm = $\rm 10^{-3} m$

mm = $\rm 10^{-3} m$

mm = $\rm 10^{-3} m$

质量$M$

$Kg$

Kg

T(吨) $=\rm 10^3Kg$

g$=\rm 10^{-3}Kg$

时间$t$

$s$

s

s

s

温度$T$

$K$

K

K

K

面积$A(L^2)$

$m^2$

$= \rm mm^2 = 10^{-6} m^3$

$= \rm mm^2 = 10^{-6} m^3$

$= \rm mm^2 = 10^{-6} m^3$

体积$V(L^3)$

$m^3$

$ = \rm mm^3 = 10^{-9} m^3$

$ = \rm mm^3 = 10^{-9} m^3$

$ = \rm mm^3 = 10^{-9} m^3$

力$F$

N(牛顿、牛)$=\frac{Kg\cdot m}{s^2}$

$\rm \frac{Kg \cdot mm}{s^2}$

$ = \rm 10^{-3}N$

$\rm \frac{T \cdot mm}{s^2}$

$ = \rm N$

$\rm \frac{g \cdot mm}{s^2}$

$ = \rm 10^{-6} N$

密度$ρ$

$\frac{Kg}{m^3} = \frac{10^{-3}g}{cm^3}$

$\rm \frac{Kg}{mm^3} = \frac{10^{6}g}{cm^3}$

$\rm \frac{T}{mm^3} = \frac{10^{9}g}{cm^3}$

$\rm \frac{g}{mm^3} = \frac{10^{3}g}{cm^3}$

能量、焓、热量$\frac{M\cdot L^2}{t^2}$

J(焦耳)$N \cdot m = \frac{Kg \cdot m^2}{s^2}$

$\rm \frac{Kg \cdot mm^2}{s^2} $

$\rm = 10^{-6}J$

$\rm \frac{T \cdot mm^2}{s^2} $

$\rm = 10^{-3}J$

$\rm \frac{g \cdot mm^2}{s^2} $

$\rm = 10^{-9}J$

功率、热流量$\frac{M\cdot L^2}{t^3}$

W(瓦)$\frac{J}{s} = \frac{Kg \cdot m^2}{s^3}$

$\rm \frac{Kg \cdot mm^2}{s^3} $

$\rm = 10^{-6}W$

$\rm \frac{T \cdot mm^2}{s^3} $

$\rm = 10^{-3}W$

$\rm \frac{g \cdot mm^2}{s^3} $

$\rm = 10^{-9}W$

压力、应力、模量$\frac{M}{t^2\cdot L}$

$\rm Pa = \frac{N}{m^2} = \frac{Kg }{s^2\cdot m}$

$\rm \frac{Kg }{s^2\cdot mm}$

$\rm 10^3Pa = kPa$

$\rm \frac{T }{s^2\cdot mm}$

$\rm 10^6Pa = MPa$

$\rm \frac{g }{s^2\cdot mm}$

$\rm Pa$

2. Mesh网格

For Guided wave (Lamb wave): The largest mesh element size was smaller than 1/10 of the shortest incident wavelength.

3. Operation skills

3.1 Visualization

The  results obtained by submintting a job in Abaqus often has mesh grid. Operations to remove the mesh grid lines?

  ○ open the result file in "Visualization".
  ○ Select the "Options" tab and click on the "Common" option.
  ○ "Common Plot Options" --> "Basic" --> "Visible Edges" --> Select "Free edges" or "No edges".

4. Materials

steel: T-mm-s-Mpa

Denisity: $7.85 g/cm^3 = 7850 kg/m^3 = 7.85 \times 10^{-9} T/mm^3$ Abaqus setting: $ 7.85 \times 10^{-9} $

Young's modulus: $210 GPa = 210 000 MPa $ Abaqus setting: $  210 000 $

Poisson Ratio: 0.3


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