Influence of material properties on the interaction between residual stress and springback in the case of in plane sheets forming

Nanu, N.; Brabie, Gheorghe

doi:10.1016/s1644-9665(12)60090-9

Cited by 5 publications

(1 citation statement)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…15 as follows: oq = c y = on cos a + /«tn sin a = oq = o2 (6) oz = on sin an o n cos a = 03 (7) where oN is the press stress, which is the contact pressure per unit of area on the interface applied by the upper workpiece during the clinching. Because the spring back is closely related to the material properties [42,43], high yield strength and yield ratio <Ts/erb may result in low formability and significant spring back af ter plastic deformation [44]. (5)- (7), the press stress oN can be obtained c o s a ( l + n ) -s in a ( lf i) It is noted that the undercut was formed between the joined materials.…”

Section: Effect Of Aged Aa6111-t4 Aluminum On Jointmentioning

confidence: 99%

Effect of Aging on the Strength of Clinching Galvanized SAE1004 Steel-to-Aluminum AA6111 Joints

Gao

Liu

Wang

2014

Journal of Manufacturing Science and Engineering

View full text Add to dashboard Cite

S c h o o l o f P h y s ic s and E n g in e erin g,Key Lab o f M a te ria ls P h ysics, Z h e n gzhou U nive rsity, Z h e n gzh o u 4 5 0 0 5 2 , C hin a e -m a il: 6 4 1 3 0 3 5 6 9 @ q q .c o m Z hong-X ia Liu1 S c h o o l o f P h y s ic s and E n g in e erin g, Key Lab o f M a te ria ls P h ysics, Z h e n gzh o u U nive rsity, Z h e n gzh o u 4 5 0 0 5 2 , C hin a e -m a il: liu zh o n g xia @ zzu .e d u .cn Pei-C hung W ang M a n u fa c tu rin g S ystem s R esearch Lab, G eneral M o to rs Research and D eve lo pm e n t Center, 3 0 5 0 0 M o u n d Road, W a rre n, M l 4 8 0 9 0 e -m a il: p e i-c h u n g .w a n g @ g m .c o mEffect of Aging on the Strength of Clinching Galvanized SAE1004 Steel-to-Aluminum AA6111 Joints Mechanical clinching method has been shown to be a feasible alternative to self piercing riveting (SPR) for joining dissimilar materials, particularly for vehicle assemblies made in aluminum-to-steel. While a great deal of effort has been focused on studying the pro cess development, there is an urgent need to understand the effects of aged aluminum on the strengths o f the clinching steel-aluminum joints. To evaluate exactly the influence of mechanical properties of aged aluminum alloy on the strength of the clinching joint, 1.0mm thick AA6111-T4 aluminum was firstly solution heat-treated at 550°C for 30min followed by nature ageing treatment for various times and then clinching to 0.7 mm thick galvanized SAE1004 steel with SKB die. The section parameters and strength of the clinching joints were measured. The effect of mechanical properties of aged AA6111-T4 aluminum was analyzed using an analytical model. The results showed that aged alumi num affected little the clinchability but influenced the section parameters and strength of the clinching workpieces. The strength of the clinching SAE1004-to-AA6111-T4 joints increased with increasing the strength of AA6111-T4 aluminum. This can be primarily attributed to the fact that the strengthening AA6111-T4 aluminum resulted in larger re sidual press stress developed during the clinching.

show abstract