Modeling of the Thermal Field in Dissimilar Alloy Ultrasonic Welding

Jedrasiak, Patryk; Shercliff, Hugh; Yc, Chen; L, Wang; Prangnell, P.B.; Robson, James

doi:10.1007/s11665-014-1342-8

Cited by 25 publications

(26 citation statements)

References 26 publications

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“…Jedrasiak et al [7] described a finite element model for prediction of temperature during ultrasonic welding of aluminum–aluminum, aluminum–magnesium and aluminum–steel work materials. The temperature data obtained were used for estimation of growth of intermetallic phase between aluminum-magnesium welds.…”

Section: Introductionmentioning

confidence: 99%

Effect of Temperature Distribution in Ultrasonically Welded Joints of Copper Wire and Sheet Used for Electrical Contacts

2018

Materials

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The temperature distribution occurring at the interface while joining a simple electrical contact comprising of a copper wire and a copper sheet using ultrasonic metal welding was analyzed using finite element method. Heat flux due to plastic deformation and friction was calculated and provided as input load for simulation of temperature distribution. The results of temperature obtained from simulation are found to be in good agreement with the results of temperature from experiments measured using thermocouple. Special focus was given to how the heat generated at the wire–sheet interface affect the strength of the joint in tension. With the knowledge of heat generated at the interface while welding, it is possible to control the strength of the joint and produce defect free joints. Based on the results from finite element analysis and experiments, it is observed that the influence of heat developed due to friction and plastic deformation of metallic specimens has a significant effect on the progress of welding and strength of the joint.

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Section: Introductionmentioning

confidence: 99%

Effect of Temperature Distribution in Ultrasonically Welded Joints of Copper Wire and Sheet Used for Electrical Contacts

2018

Materials

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“…The tests were carried out according to the International Organization for Standardization ISO 527-1 and the specimens were prepared according to ISO 527-4 (type-3 specimens). The transverse elasticity modulus was determined using the ultrasonic through transmission approach [17]. In which an ultrasonic frequency of 5 MHz was used.…”

Section: The Numerical Modelmentioning

confidence: 99%

“…This in turn was used to calculate the displacement amplitude in each row of elements Z i , with the assumption that the total amplitude of deformation (vibration displacement amplitude) Z 0 was constant throughout the process duration. The stain amplitude of the element ε m0, ij was predicted using Equations (15)- (17) under the assumption that the matrix volume fraction was uniform throughout the elements. The strain amplitude (the strain component in the zz direction) in the matrix of each element was calculated by Equation 18.…”

Section: The Numerical Modelmentioning

confidence: 99%

“…The cycle-jump method was used by Cojocaru and Karlsson [16] to accelerate the FEM analysis of the failure of the structures subjected to cyclic loading. Jedrasiak et al [17] implemented sequentially coupled deformation and thermal models to simulate the ultrasonic welding of dissimilar metallic alloys. The deformation model calculated the heat generation over a short period of time and the thermal model predicted the thermal field over a longer period of time.…”

Section: Introductionmentioning

confidence: 99%

“…Zhang et al [19] measured the relaxation modulus curves at various temperatures for polymethylmethacrylate (PMMA) and used the data to calculate the dynamic loss modulus as a function of time. Another promising approach is the inverse determination of material properties using experimental measurements and computational simulation, such as the methods proposed by Jedrasiak et al [17] and Willis et al [20].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Numerical Analysis of the Temporal and Spatial Temperature Development during the Ultrasonic Spot Welding of Fibre-Reinforced Thermoplastics

Tutunjian

Dannemann

Modler

et al. 2020

JMMP

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The ultrasonic spot welding of fibre-reinforced thermoplastic laminates has received great interest from researchers, mainly in the fields of aerospace and automotive industries. It offers an efficient solution to join large thermoplastic composite parts through the spot welding approach with a high level of automation. In this paper, the temporal and spatial development of the temperature in an ultrasonic weld spot between two fibre-reinforced thermoplastic laminates was modelled. During the ultrasonic welding of thermoplastic composite laminates without energy directors a sudden temperature jump in the weld spot is usually observed. The temperature increase occurs rapidly up to the decomposition of the thermoplastic matrix and causes the degradation of the weld spot. To understand the temperature distribution within the weld spot and to calculate its temporal development, the thermal problem was analysed using a two-dimensional explicit finite difference method. To evaluate the models, the calculated time traces of the temperature in the weld spot were compared with the experimentally obtained values under comparable conditions.

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Ultrasonic Spot Welding—Low Energy Manufacturing for Lightweight Fuel Efficient Transport Applications

Haddadi

2017

Materials Forming, Machining and Tribology

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Modeling of the Thermal Field in Dissimilar Alloy Ultrasonic Welding

Cited by 25 publications

References 26 publications

Effect of Temperature Distribution in Ultrasonically Welded Joints of Copper Wire and Sheet Used for Electrical Contacts

Effect of Temperature Distribution in Ultrasonically Welded Joints of Copper Wire and Sheet Used for Electrical Contacts

A Numerical Analysis of the Temporal and Spatial Temperature Development during the Ultrasonic Spot Welding of Fibre-Reinforced Thermoplastics

Ultrasonic Spot Welding—Low Energy Manufacturing for Lightweight Fuel Efficient Transport Applications

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