| Outside diameter in free (no load) condition |
| Outside diameter in free (no load) condition |
| Wire diameter |
| Wire diameter |
| Total number of coils |
| Total number of coils |
| Minimum operating load |
| Minimum operating load (Length L_1) |
| Maximum operating load |
| Maximum operating load |
| Empty space between each turn (not the same as pitch) |
| Empty space between each turn (not the same as pitch) |
| Average of coil inside and outside diameters |
| Inside diameter in free (no load) condition |
| Inside diameter in free (no load) condition |
| Number of Active coils |
| Spring rate (spring constant); slope of force-deflection curve |
| Spring rate (spring constant); slope of force-deflection curve |
| Deflection from free to load point 1 |
| Deflection from free to load point 1 |
| Deflection from free to load point 2 |
| Deflection from free to load point 2 |
| Length of spring body in free condition |
| Length of spring body in free condition |
| Spring length at load point 1 |
| Spring length at load point 2 |
| Relative angle between arms in free condition |
| Angular displacement from point 1 to point 2 |
| Angular displacement from point 1 to point 2 |
| Weight of one spring |
| Weight of one spring |
| Ratio of mean coil diameter (Mean_Dia) to wire diameter (Wire_Dia) |
| End deflection allowance |
| Bending stress in body wire at load point 1 |
| Bending stress in body wire at load point 2 |
| Placeholder for future calculation of bending stress in end arms |
| Factor of safety at load point 2 |
| Factor of safety to achieve the target cycle life category. See on-line Help. |
| Rough estimate of the average number of cycles to failure when cycling between point 1 and point 2. See on-line Help. |
| Deflection of load point 2 as a percent of total safe deflection |
| Force produced at distance of Arm_2 |
| Force produced at distance of Arm_2 |
| Change in elastic potential energy between 1 and 2 |
| Torsion spring design |
| Property Calculation Method - Controls how material properties are determined and used. 1-Use values from material table 2-Specify Tensile, %_Ten_Bnd_Stat & %_Ten_Bnd_Endur 3-Specify allowable stresses: Stress_Lim_Bnd_Stat & Stress_Lim_Bnd_Endur |
| Select wire material |
| Wire specification |
| Coil winding process temperature - Cold coiled vs. Hot wound |
| Selects heat treatment process |
| Select cycle life target. Confirm that FS_CycleLife MIN constraint is enabled to utilize the selected %_Tensile_Endur for the material. |
| Number of coils not contributing to deflection. Depends on End_Type. |
| Wire material density |
| Wire elastic modulus (E) |
| Reduction factor applied to modulus of hot-wound materials |
| Wire tensile strength (computed as a function of wire diameter when Prop_Calc_Method=1; See on-line Help for details) |
| Allowable percent of tensile strength for selected life cycle category |
| Allowable percent of tensile strength for static applications |
| Allowable stress for selected life cycle category |
| Allowable stress for static applications |
| Select end type |
| Moment arm at end 1 |
| Moment arm at end 1 |
| Moment arm at end 2 |
| Moment arm at end 2 |
| Extra length at end 1 added to wire length calculation |
| Extra length at end 1 added to wire length calculation |
| Extra length at end 2 added to wire length calculation |
| Extra length at end 2 added to wire length calculation |
| Length at end 1 used to calculate end deflection allowance |
| Length at end 1 used to calculate end deflection allowance |
| Length at end 2 used to calculate end deflection allowance |
| Length at end 2 used to calculate end deflection allowance |