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Formation mechanism and modeling of surface waviness in incremental sheet forming

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 2, doi: 10.1007/s11465-022-0679-1

Abstract: Improving and controlling surface quality has always been a challenge for incremental sheet forming (

Keywords： surface waviness incremental sheet forming numerical simulation formation mechanism deformation history

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Finite element simulations of sheet metal forming under complex strain paths

CHEN Wei, YANG Jichang, WU Xiaofeng, LU Dun, GUO Weigang

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 4, Pages 399-403 doi: 10.1007/s11465-007-0069-8

Abstract: Fracture is a common defect in sheet metal forming and it is essentially caused by tensile instabilityThis paper analyzes some experiments and theories for building forming limit diagrams of sheet metallimit diagrams of the sheet metal under complex strain paths.Finally, the forming method of the rear hanger is confirmed.metal forming.

Keywords： dangerous forming method different hanger forming

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FEM-based strain analysis study for multilayer sheet forming process

Rongjing ZHANG,Lihui LANG,Rizwan ZAFAR

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 4, Pages 373-379 doi: 10.1007/s11465-015-0371-9

Abstract: Different forming modes such as wrinkling and fracture are discussed by using experimental and numericalHydroforming is used for multilayer forming.

Keywords： finite element method (FEM) strain analysis multilayer sheet forming

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The lean forming technology for auto sheet metal

Lin Zhongqin,Li Shuhui,Wang Wurong,Lai Xinmin

Strategic Study of CAE 2009, Volume 11, Issue 11, Pages 22-29

Abstract:

The lean forming technology for auto sheet metal has been proposed, whichAiming at decreasing the forming sensitivity to variation in materials and process, a forming robustThe technical framework for auto sheet metal lean forming was constructed based on the idea of properBaosteel and some automobile plants, 50 % market sharing has been targeted for Baosteel auto steel sheet, which effectively promotes the development of application technologies for home-made auto sheet metal

Keywords： auto sheet metal lean forming proper material selection process optimization robust control

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Research progress of advanced manufacturing technology in Xi’an Jiaotong University

Lu Bingheng

Strategic Study of CAE 2013, Volume 15, Issue 1, Pages 4-8

Abstract: This paper presents the research progress on cutting technology, forming technology and additive

Keywords： high speed machining incremental forming additive manufacturing

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Functional tolerance theory in incremental growth design

YANG Bo, ZE Xiangbo, YANG Tao

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 3, Pages 336-343 doi: 10.1007/s11465-007-0059-x

Abstract: is used to demonstrate the successful application of the proposed functional tolerance theory in the incremental

Keywords： successful transformation mathematical automation technology tolerance allocation minimum

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Research progress of the cause for orange peel of aluminum alloy sheet during tensile deformation

Ma Mingtu,Yang Hongya,Wu Emei and Jin Qingsheng

Strategic Study of CAE 2014, Volume 16, Issue 1, Pages 4-13

Abstract:

Research progresses of forming causes for orange peel during the tensile deformation of aluminum alloysheet are reviewed.Recent research results of electron backscattered diffraction（EBSD）using the forming causes of orangeAccording to the mentioned results，microstructure and mechanical properties，the forming causes of orangeinhomogeneity deformation，grain rotation and texture than that of fine grain，resulting in surface orange peel forming

Keywords： orange peel forming mechanical property tension fracture nano hardness EBSD X-ray

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Combination form analysis and experimental study of mechanical properties on steel sheet glass fiber

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4, Pages 834-850 doi: 10.1007/s11709-021-0743-7

Abstract: The concept of steel sheet glass fiber reinforced polymer (GFRP) composite bar (SSGCB) was put forward

Keywords： steel sheet GFRP composite bar combination form numerical modeling mechanical properties test strength

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Preparation and characterization of PVDF-PFSA flat sheet ultrafiltration membranes

Jiquan MA, Junhong ZHAO, Zhongbin REN, Lei LI

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 3, Pages 301-310 doi: 10.1007/s11705-012-1204-6

Abstract: High performance polyvinylidene fluoride (PVDF) flat sheet ultrafiltration (UF) membranes have been preparedand as a hydrophilic component of the membranes and polyethylene glycol ( = 400) (PEG400) as a pore forming

Keywords： polyvinylidene fluoride perfluorosulfonic acid polyethylene glycol flat sheet membrane ultrafiltration

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Digital high-efficiency print forming method and device for multi-material casting molds

Zhongde SHAN, Zhi GUO, Dong DU, Feng LIU, Wenjiang LI

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 2, Pages 328-337 doi: 10.1007/s11465-019-0574-6

Abstract: This study proposes a novel high-efficiency print forming method and device for multi-material castingThe proposed method is specifically related to the integrated forming of two-way coating and printingThese processes can realize the high-efficiency print forming of high-performance sand molds.The integrated forming method for layered heating and roller compaction presented in this study effectively

Keywords： multi-material casting mold 3D printing efficient print forming method

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radiation and heat source/sink on unsteady MHD boundary layer flow and heat transfer over a shrinking sheet

Krishnendu Bhattacharyya

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 3, Pages 376-384 doi: 10.1007/s11705-011-1121-0

Abstract: radiation and heat source/sink on the unsteady boundary layer flow and heat transfer past a shrinking sheet

Keywords： MHD boundary layer unsteady flow heat transfer thermal radiation heat source/sink shrinking sheet suction

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A hierarchical system to predict behavior of soil and cantilever sheet wall by data-driven models

Nang Duc BUI; Hieu Chi PHAN; Tiep Duc PHAM; Ashutosh Sutra DHAR

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 6, Pages 667-684 doi: 10.1007/s11709-022-0822-4

Abstract: machine learning (ML) models into a logical hierarchical system which evaluates the stability of the sheetstatus (random forest classification, RFC) followed by 1) the cantilever top horizontal displacement of sheet

Keywords： finite element analysis cantilever sheet wall machine learning artificial neural network random forest

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Hybrid forming mechanism of patternless casting and laser cladding

Zhongde SHAN, Fuzhen SUN, Yang LIU

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 4, Pages 393-401 doi: 10.1007/s11465-019-0550-1

Abstract: In accordance with the requirement of manufacturing dies quickly and economically, a hybrid forming methodAn experimental study is conducted on the hybrid forming process and its trial production and application

Keywords： patternless casting laser cladding hybrid forming rapid tooling

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Highlight yield forming and innovative technologies in tropical crops

Wenquan WANG

Frontiers of Agricultural Science and Engineering 2016, Volume 3, Issue 4, Pages 283-284 doi: 10.15302/J-FASE-2016128

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Properties and effect of forming sewage sludge into lightweight ceramics

Min YUE, Qinyan YUE, Yuanfeng QI, Baoyu GAO, Hui YU

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 1, Pages 117-124 doi: 10.1007/s11783-010-0220-3

Abstract: In this work we investigated the chemical, thermal and toxic properties of dried sewage sludge (DSS), the preparation and properties of lightweight sludge ceramic (LSC) and the mechanisms of action of the organic and inorganic foaming agents (OFAs and IFAs). The chemical components and thermal properties of the raw materials were studied by Energy Dispersive X-ray Detection (EDX) and Thermogravimetric Analysis and Differential Scanning Calorimetry (DSC/TGA). The mineral phases of the raw materials and the formed ceramics were determined by X-ray Diffraction (XRD). The leaching characteristics of heavy metals were investigated with Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES). Different ratios of DSS and clay were mixed and pressed into raw pellets. After drying and preheating treatment, the raw pellets were sintered at 1150°C for 10 min. The physical properties of LSC (50 wt% DSS added) were tested. The results showed that when the addition of DSS was above 50 wt%, LSC began to shrink, and a maximum density occurred. The environmental safety of LSC was satisfactory. XRD showed that some new mineral phases formed in the LSC. Observation of the microstructure by Scanning Electron Microscope (SEM) indicated that the body of LSC was porous.

Keywords： sludge foaming agents ceramics preheating process