Week - 1 - Consistency of Units

AIM

To study how to convert a property value from one system of units to another system of units as LS DYNA does not have a default system of units. Also our requirement of units may be different than standard ones.

1 Pa = 1 `N/m^2`

=1 `(kg*m)/(s^2*m^2)`

=`1*(kg*10^3*mm)/((10^3)^2*ms^2*(10^3)^2*mm^2`

=`1/10^9((kg)/(ms^2*mm))`

therefore ,

210 Gpa = `210*10^9*10^-9*((kg)/(ms^2*mm))`

= `210*((kg)/(ms^2*mm))`

	MASS 1kg	LENGTH 1m	TIME 1s	FORCE 1N	STRESS 1Pa	ENERGY 1Nm	DENSITY 1Kg/m3	YOUNG'S Modulus 210GPa	Velocity 56.33KMPH	GRAVITY 9.8m/s2
Kg cm ms	1	100	1000	1e-4	1e-8	1e-2	1e-6	210e-8	15.64e-1	9.81e-4
Kg cm s	1	100	1	100	1e-2	1e+4	1e-6	210e-2	15.64e+2	9.81e+2
gm mm ms	1e+3	1000	1000	1	1e-6	1e+3	1e-6	210e-6	15.64	9.81e-3
kg m s	1	1	1	1	1	1	1	210	15.64	9.81
g cm s	1e+3	100	1	1e+5	10	1e+7	1e-3	210e+1	15.64e+2	9.81e+4
g cm us	1e+3	100	10^6	1e-7	1e-11	1e-5	1e-3	210e-11	15.64e-4	9.81e-10
g mm s	1e+3	1000	1	1e+6	1	1e+9	1e-6	210	15.64e+3	9.81e+3
ton mm s	1e-3	1000	1	1	1e-6	1e+3	1e-12	210e-6	15.64e+3	9.81e+3
slug ft s	0.0685	3.28	1	0.2246	0.02087	0.7366	1.94e-3	4.38	51.299	32.1768
kg mm s	1	1000	1	1e+3	1e-3	1e+6	1e-9	210e-3	15.64e+3	9.81e+3
g cm ms	1e+3	100	1000	1e-1	1e-5	10	1e-3	210e-5	15.64e-1	9.81e-4
kg mm ms	1	1000	1000	1e-3	1e-9	1	1e-9	210e-9	15.64	9.81e-3