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发布日期:2021年12月06日
OPPOSITE SHOULDER FILLETS IN A STEPPED BAR

Opposite shoulder fillets in stepped flat bar. Stress concentration factors (Kt) calculator for tension, bending and torsion loads.

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Stress concentration factors for opposite shoulder fillets in stepped bar
 INPUT PARAMETERS
Parameter Value
Thickness of stepped section  [D]
Thickness of flat section [d]
Radius [r]
Length of stepped section [L]
Width of bar[t]
Tension force [P]
Bending moment [M]

Note: Use dot "." as decimal separator.


 RESULTS
LOADING TYPE - TENSION
Stress concentration factors for opposite shoulder fillets in stepped bar under tension
Parameter Value
Stress concentration factor [Kt] * --- ---
Nominal tension stress at flat bar [σnom ] o ---
Maximum tension stress due to tension load [σmax ] ---
LOADING TYPE - BENDING
Stress concentration factors for opposite shoulder fillets in stepped bar under bending
Parameter Value
Stress concentration factor [Kt] * --- ---
Nominal tension stress at flat bar [σnom ] +HAOLEAV在线观看 HAOLEAV无删减 琪琪看片网 HAOLEAV在线观看 HAOLEAV无删减 琪琪看片网 ,亚洲AV男人电影天堂在线观看 亚洲AV男人电影天堂无删减 亚洲AV男人电影天堂在线观看 亚洲AV男人电影天堂无删减 ---
Maximum tension stress due to bending [σmax ] ---

Note 1: * Geometry rises σnom by a factor of Kt. (Kt = σmaxnom)

Note 2: o σnom= P/(td) (Nominal tension stress occurred due to tension load)

Note 3: + σnom = 6M/(td2) (Nominal tension stress occured due to bending)


Definitions:

Stress Concentration Factor:Dimensional changes and discontinuities of a member in a loaded structure causes variations of stress and high stresses concentrate near these dimensional changes. This situation of high stresses near dimensional changes and discontinuities of a member (holes, sharp corners, cracks etc.) is called stress concentration. The ratio of peak stress near stress riser to average stress over the member is called stress concentration factor.

KtHAOLEAV在线观看 HAOLEAV无删减 琪琪看片网 HAOLEAV在线观看 HAOLEAV无删减 琪琪看片网 ,亚洲AV男人电影天堂在线观看 亚洲AV男人电影天堂无删减 亚洲AV男人电影天堂在线观看 亚洲AV男人电影天堂无删减 : Theoretical stress concentration factor in elastic range = (σmaxnom)

Formulas:

Stress concentration factors for opposite shoulder fillets in stepped bar
Tension
Stress concentration factors for opposite shoulder fillets in stepped bar under tension
$$0.1\le \frac { h }{ r } \le 2.0$$ $$2\le \frac { h }{ r } \le 20$$
$${ C }_{ 1 }=1.006+1.008\sqrt { h/r } -0.044h/r$$ $${ C }_{ 1 }=1.020+1.009\sqrt { h/r } -0.048h/r$$
$${ C }_{ 2 }=-0.115-0.584\sqrt { h/r } +0.315h/r$$ $${ C }_{ 2 }=-0.065-0.165\sqrt { h/r } -0.007h/r$$
HAOLEAV在线观看 HAOLEAV无删减 琪琪看片网 HAOLEAV在线观看 HAOLEAV无删减 琪琪看片网 ,亚洲AV男人电影天堂在线观看 亚洲AV男人电影天堂无删减 亚洲AV男人电影天堂在线观看 亚洲AV男人电影天堂无删减 $${ C }_{ 3 }=0.245-1.006\sqrt { h/r } -0.257h/r$$ $${ C }_{ 3 }=-3.459+1.266\sqrt { h/r } -0.016h/r$$
$${ C }_{ 4 }=-0.135+0.582\sqrt { h/r } -0.017h/r$$ $${ C }_{ 4 }=3.505-2.109\sqrt { h/r } +0.069h/r$$
$${ K }_{ t }={ C }_{ 1 }+{ C }_{ 2 }\frac { 2h }{ D } +{ C }_{ 3 }{ (\frac { 2h }{ D } ) }^{ 2 }+{ C }_{ 4 }{ (\frac { 2h }{ D } ) }^{ 3 }$$
where
$$\frac { L }{ D } >-1.89(\frac { r }{ d } -0.15)+5.5$$
$${ \sigma }_{ nom }=P/td$$
$${ \sigma }_{ max }={ K }_{ t }{ \sigma }_{ nom }$$
Bending
Stress concentration factors for opposite shoulder fillets in stepped bar under bending
$$0.1\le \frac { h }{ r } \le 2.0$$ $$2\le \frac { h }{ r } \le 20$$
$${ C }_{ 1 }=1.006+0.967\sqrt { h/r } +0.013h/r$$ $${ C }_{ 1 }=1.058+1.002\sqrt { h/r } -0.038h/r$$
$${ C }_{ 2 }=-0.270-2.372\sqrt { h/r } +0.708h/r$$ $${ C }_{ 2 }=-3.652+1.639\sqrt { h/r } -0.436h/r$$
$${ C }_{ 3 }=0.662+1.157\sqrt { h/r } -0.908h/r$$ $${ C }_{ 3 }=6.170-5.687\sqrt { h/r } +1.175h/r$$
$${ C }_{ 4 }=-0.405+0.249\sqrt { h/r } -0.200h/r$$ $${ C }_{ 4 }=-2.558+3.046\sqrt { h/r } -0.701h/r$$
$${ K }_{ t }={ C }_{ 1 }+{ C }_{ 2 }\frac { 2h }{ D } +{ C }_{ 3 }{ (\frac { 2h }{ D } ) }^{ 2 }+{ C }_{ 4 }{ (\frac { 2h }{ D } ) }^{ 3 }$$
where
$$\frac { L }{ D } >-2.05(\frac { r }{ d } -0.025)+2$$
$${ \sigma }_{ nom }={ 6M }/{ t{ d }^{ 2 } }$$
$${ \sigma }_{ max }={ K }_{ t }{ \sigma }_{ nom }$$

Reference: