Abaqus 齿轮力和应力计算(1).ppt

节选段落一：
Assume operating temp. less than 250o (KT=CT = 1), new gear (Cf = 1), and a small size gear (Ks=Cs = 1).
Selections and assumptions
Standard full depth gears with pressure angle, φ = 20o, will be used.


节选段落二：
Assume uniform load
Ka= 1
KL = CL = 1
Design for
107 life cycle
KR = CR= 1
Select 99% reliability
Design Example
Surface failure
From assumptions and selections list;
Ca= 1
CR = 1
CL = 1
Cs = 1
Cf = 1
CH = 1 (pinion)
,
,
,
,
,
,
= 0.107
cost sint
2mN
mG
mG + 1
I =
mN = 1 for spur gears
mG = speed


节选段落三：
V = π d ω / 12
Wt = (1.26 x 105) 25 / dP 1000
Wt = 3150 / dP
Assume dynamic factor C v = .9 and load distribution factor Cm = 1.6 Both assumptions have to be checked later.
2300[(3150/dP)(1/.9)(1.6)(1/.107)(1/dp)2]1/2 = 125,000
hp =
Wt V / 33000
Transmitted load
Wt = (1.26 x 105) hp / dP ωP
dP = 2.6