CONSISTENCY OF UNIT

OBJECTIVE:

To convert given measurement values to different unit systems and write its conversion factor.

Measurements:

MASS 1kg
LENGTH 1m
TIME 1s
FORCE 1N
STRESS 1Pa
ENERGY 1Nm
DENSITY 1 kg/m3
YOUNG'S Modulus 210GPa
Velocity 56.33KMPH
GRAVITY 9.8m/s2

Unit systems:

gm mm ms

Kg cm ms

Kg cm s

kg m s

g cm s

g cm us

g mm s

ton mm s

slug ft s

kg mm s

g cm ms

kg mm ms

Note:

Different industries use different system of units as per their convenience. The units for the basic measurement quantities, mass distance and time - dictate how the other derived quantities will be expressed. For example, automotive industries use kg,mm,ms as their standard unit system. Construction industries are likely to use tonne,m,s as their unit system. Similarly, PCB simulation in electronic industry uses gm, micrometer,ms as their system of units.

LS-DYNA doesn't have a default system of units. User needs to input material properties and physical dimensions according to a consistent system of units as per their choice. This warrants that to use LS-DYNA in different circumstances, users has to be conversant with converting quantities from one system of units to another.

Calculations:

Calculation for conversion of SI unit to "gm/mm/ms" unit system is shown below.

Conversion made to other unit system is as follows:

RESULTS:

Then given measurement values have been converted to different unit system given in the data and found out the conversion factor.

Learning outcomes:

• Fundamental and deriverd quantity.
• Converting one unit system to other.

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File (tabulated data) : https://drive.google.com/file/d/14NpoEkvONIc29pbOSOk9APJ9XLBipQrt/view?usp=sharing