A simplified approach for evaluating bendability and springback in plastic bending of anisotropic sheet metals

Leu, Daw-Kwei

doi:10.1016/s0924-0136(96)02453-3

Cited by 99 publications

(42 citation statements)

References 1 publication

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“…The effect of normal anisotropy on the springback was studied by Liu 23 and Verma 24 . They showed that the springback increases when the normal anisotropy increases.…”

Section: Effects Of the Artificial-aging Temperature And Time On The mentioning

confidence: 99%

“…According to the studies of Liu 23 and Verma 24 , this indicates that aging has a positive effect on the springback angle of the alloy because the normal anisotropy is decreased by the aging parameters. The strain hardening is an ability of a material to strengthen or harden with the increasing strain level and it is one of the most important properties influencing the formability of sheet metals.…”

Section: Effects Of the Artificial-aging Temperature And Time On The mentioning

confidence: 99%

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Effects of the artificial-aging temperature and time on the mechanical properties and springback behavior of AA6061

Polat¹,

Avsar²,

Öztürk³

2015

Mater. Tehnol.

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In this study, the effects of the artificial-aging temperature and time on the mechanical properties and springback behavior of AA6061 are investigated. The results reveal that the yield strength, the tensile strength and the elongations decreased with the increasing artificial-aging temperature, but increased with the increasing artificial-aging time up to the peak age. The springback of the alloy increased significantly with the increasing artificial-aging time at the artificial-aging temperature ranging from 160°C to 180°C and decreased with the artificial-aging time at 200°C. The springback angle in the as-received condition is lower than in all the aged conditions. Keywords: aluminum alloy, AA6061, artificial aging, mechanical properties, springback V tej {tudiji so bili preiskovani vplivi temperature in~asa umetnega staranja na mehanske lastnosti in vzmetnost AA6061. Rezultati so pokazali zmanj{anje meje te~enja, natezne trdnosti in raztezka pri nara{~anju temperature umetnega staranja ter pove~evanje teh vrednosti do maksimuma pri podalj{anju~asa staranja. Vzmetnost zlitine ob~utno nara{~a z nara{~anjem~asa umetnega staranja v obmo~ju temperatur od 160°C do 180°C in se zmanj{a s~asom umetnega staranja pri 200°C. Kot vzmetnosti v dobavljenem stanju je manj{i kot pri vseh staranih razmerah. Klju~ne besede: aluminijeva zlitina, AA6061, umetno staranje, mehanske lastnosti, vzmetnost

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“…The effect of normal anisotropy on the springback was studied by Liu 23 and Verma 24 . They showed that the springback increases when the normal anisotropy increases.…”

Section: Effects Of the Artificial-aging Temperature And Time On The mentioning

confidence: 99%

Section: Effects Of the Artificial-aging Temperature And Time On The mentioning

confidence: 99%

Effects of the artificial-aging temperature and time on the mechanical properties and springback behavior of AA6061

Polat¹,

Avsar²,

Öztürk³

2015

Mater. Tehnol.

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“…In practice, established springback databases under the specific process parameters by using "trial and error" are the efficient solution method for springback. Then the springback compensation and control are carried out by using the databases [4,5]. This method will waste a lot of manpower, financial resources, and extend the production cycle, improve the production cost.…”

Section: Introductionmentioning

confidence: 99%

Stress-strain analysis of NC bending and springback process for 21-6-9 stainless steel tube

Fang¹,

Lu²,

Wang³

et al. 2015

Proceedings of the 2015 International Conference on Advanced Engineering Materials and Technology

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In order to study the distribution of stress-strain of bending and springback process, based on the platform of ABAQUS code, a 3D elastic plastic model of the whole NC bending process of 21-6-9 (0Cr21Ni6Mn9N) stainless steel tube was established, and its reliability was validated. Then, the distribution and variation laws of the stress-strain for bent tube during NC bending and springback process were obtained by FE simulation. The results show that the outside of bent tube suffers tangential tension stress, and that of the inner is more complicated after bending. The stress unloading is not obvious after retracting mandrel, which indicates that the process of retracting mandrel has less effect on springback. The stress unloading is obvious, and a reverse loading phenomenon occurs after springback, while the strain of the bent tube is nearly not changed. The results can provide theoretical basis for springback control during tube NC bending process.

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“…Such properties include the states of hardening and damage as a result of the increase in strain toward the inner and outer surfaces in the bending arc [9,10,11]. The accuracy of the damage contour into the sheet is directly related to accuracy of the damage law modelling [4,12,13,14,15,16].…”

Section: Introductionmentioning

confidence: 99%

Damage prediction in L-bending processes using FEM

Hambli¹,

Mkaddem

Potiron

2003

The International Journal of Advanced Manufacturing Technology

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In order to accurately predict damage and failure evolution in metal forming processes such as stamping, blanking and bending, a finite element model has been developed which is valid for the numerical description of such processes. Numerical simulation of the damage evolution has been modelled by means of a continuum damage approach. The Lemaitre damage model which takes into account the influence of triaxiality has been implemented using the ABAQUS/Standard code. The model enables damage and fracture initiation to be examined under several different loading conditions and geometry configurations. An example of the L-bending process is given to illustrate the potential applicability of the model.

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A simplified approach for evaluating bendability and springback in plastic bending of anisotropic sheet metals

Cited by 99 publications

References 1 publication

Effects of the artificial-aging temperature and time on the mechanical properties and springback behavior of AA6061

Effects of the artificial-aging temperature and time on the mechanical properties and springback behavior of AA6061

Stress-strain analysis of NC bending and springback process for 21-6-9 stainless steel tube

Damage prediction in L-bending processes using FEM

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