Aluminium Thiab Steel Gas Meter Housings, Tiv Thaiv Plhaub, Stamped Parts, Hlau Stamping Tuag.

I. Tsim Mechanism thiab Connotation ntawm Residual Stress Thaum lub sij hawm lub stamping txheej txheem, cov khoom undergoes complex elastoplastic deformation. Tom qab lub zog sab nraud raug tshem tawm, vim qhov tsis sib xws ntawm cov yas deformation thiab txias txias nyob rau hauv cov cheeb tsam sib txawv, ib qho uas tsis tuaj yeem tiv thaiv tus kheej - ntsuas qhov kev ntxhov siab yog tsim nyob rau hauv cov khoom, piv txwv li, residual stress. Qhov kev ntxhov siab no ruaj khov thiab tsis pom, cuam tshuam ncaj qha rau kev ua haujlwm tom ntej thiab kev pabcuam kev ua haujlwm ntawm ntu. Kev nkag siab txog nws cov ntsiab lus tseem ceeb yog qhov tseem ceeb rau kev txhim kho qhov zoo ntawm cov khoom stamped.

II. Theoretical Analysis Framework-Multi-Scale thiab Multi-Physics Field Coupling Perspective Traditional theories yog ua raws li ib qho -scale elastoplastic mechanics qauv, tsom rau kev faib khoom zoo li qub ntawm macroscopic residual stress. Nrog rau kev txhim kho ntawm kev siv tshuab xam zauv thiab cov ntaub ntawv tshawb fawb, ua ke nrog ntau- kev tsom xam theoretical tsom xam, kev nkag siab ntau dua thiab nyob rau hauv - qhov tob ntawm kev nkag siab ntawm cov yam ntxwv ntawm qhov seem ntawm kev ntxhov siab tuaj yeem ua tiav. Tshwj xeeb, qhov no suav nrog:

1. Multi-scale mechanical modeling: Raws li txoj kev xav ntawm microcrystalline plasticity, txheeb xyuas qhov cuam tshuam ntawm lattice defect evolution thiab micro-deformation mechanisms ntawm macroscopic residual stress. Microscale deformation inhomogeneity ua rau macroscopic kev nyuaj siab concentration los ntawm lub zog tsub zuj zuj, yog li ua kom muaj kev ntxhov siab hotspots nyob rau hauv cov cheeb tsam tseem ceeb ntawm ib feem.

2. Thermo-Kev Ntsuas Kev Sib Txuas Hluav Taws Xob: Thaum lub sij hawm stamping, kev sib txhuam, deformation, thiab cua txias ua rau qhov tsis yog -qhov kub thiab txias, ua rau muaj kev hloov pauv hauv qhov chaw faib tawm ntawm elastic modulus thiab coefficient ntawm thermal expansion, cuam tshuam rau kev ntxhov siab thiab rov ua dua tshiab. Thermo- tus qauv sib txuas tshuab tuaj yeem nthuav tawm cov txheej txheem dynamic ntawm qhov kub thiab txias gradient qhov cuam tshuam rau qhov kev ntxhov siab seem.

3. Plastic Strain Gradient Effect: Qhia txog cov kev xav ntawm cov yas gradient thiab sib xyaw ua ke ntawm qhov sib txawv ntawm cov khoom siv sab hauv uas tshwm sim los ntawm qhov tsis yog -kev deformation tso cai rau kev kwv yees qhov tseeb ntawm qhov concentration thiab kev faib tawm ntawm cov kev ntxhov siab nyob hauv cov chaw tseem ceeb xws li cov npoo thiab khoov.