Kev sim pwm (Mould sim-tawm lossis sim) yog ib kauj ruam tseem ceeb hauv kev ua kom txhua qhov ntawm cov pwm ua haujlwm kom raug ua ntej nws siv rau hauv cov txheej txheem ntau lawm. Ua li no tuaj yeem pab txo qis qhov tsis xws luag thiab tiv thaiv tus nqi tsis raug, thaum kawg ua rau kev tsim khoom zoo dua thiab ua tau zoo.
Ib txoj hauv kev zoo los sim cov pwm yog khiav cov qauv ntawm cov pwm. Los ntawm kev ua li ntawd, koj tuaj yeem tshawb xyuas cov pwm rau qhov tsis xws luag, xyuas kom meej tias cov khoom ua tau raws li qhov koj xav tau, thiab txheeb xyuas cov teeb meem uas yuav tshwm sim thaum lub sijhawm tsim khoom.
Nws tseem yog ib qho tseem ceeb rau kev txheeb xyuas ntau yam ntawm cov pwm tsim thiab cov txheej txheem tsim khoom, xws li lub qhov rooj qhov chaw, kev txhaj tshuaj, qhov kub thiab txias, thiab lub sijhawm txias. Los ntawm kev txheeb xyuas cov xwm txheej no, koj tuaj yeem txheeb xyuas cov teeb meem muaj peev xwm nrog cov pwm thiab kho lawv raws li qhov ua tau zoo, uas ua rau cov txheej txheem ntau lawm.
Tsis tas li ntawd, nws tseem ceeb heev kom ntseeg tau tias txhua yam khoom siv tau raug ntsuas kom raug thiab tswj xyuas ua ntej khiav lub pwm. Qhov no tuaj yeem pab tiv thaiv cov teeb meem xws li pwm deformation lossis warping, kom ntseeg tau tias cov khoom kawg yog qhov zoo tshaj plaws.
Hauv cov ntsiab lus, kev kuaj pwm yog ib kauj ruam tseem ceeb hauv kev tsim khoom. Los ntawm kev txheeb xyuas cov qauv thiab ntau yam ntawm cov pwm tsim thiab cov txheej txheem tsim khoom, koj tuaj yeem txheeb xyuas cov teeb meem muaj peev xwm thiab kho lawv raws li, ua rau cov txheej txheem ntau lawm thiab ua tau zoo. Nrog rau kev saib xyuas kom zoo thiab ntsuas cov khoom siv, cov pwm txhaj tshuaj tuaj yeem tsim cov khoom zoo tsis tu ncua, thaum kawg ua rau koj txoj kev lag luam ua tiav.