Plaub yam uas yuav tsum tau xav txog hauv Membrane Structure Engineering

Cov ntsiab lus tseem ceeb ntawm cov txheej txheem membrane engineering suav nrog kev tsim qauv, kev txheeb xyuas qhov sib npaug ntawm qhov sib npaug, kev txheeb xyuas kev thauj khoom, thiab kev txheeb xyuas shear.

I. Daim Ntawv Tsim: Daim ntawv tsim txiav txim siab lub hom phiaj thiab qhov ntev, peb - daim ntawv loj, thiab qhov ntim ntawm cov qauv. Nws kuj tseem txiav txim siab qhov sib koom ua ke ntawm txhua qhov kev txwv, cov ntsiab lus ntawm cov qauv, xaiv cov ntaub ntawv membrane, thiab kev tswj xyuas kev tsim kho.

II. Initial Equilibrium Shape Analysis: Initial equilibrium shape analysis tseem hu ua daim ntawv- nrhiav kev txheeb xyuas. Vim hais tias cov ntaub ntawv membrane lawv tus kheej tsis muaj compressive thiab dabtsi yog khoov txhav thiab muaj zog shear tsis zoo, lawv cov tawv nqaij thiab rigidity yuav tsum cia siab rau qhov curvature variation ntawm daim nyias nyias thiab lub prestress nyob rau hauv nws. Rau cov txheej txheem membrane engineering, yeej tsis muaj kev ntxhov siab -dawb zoo txhua lub sijhawm. Yog li ntawd, daim nyias nyias ntawm daim nyias nyias yuav tsum ua kom muaj kev sib npaug ntawm cov neeg kho tshuab nyob rau hauv qee qhov ciam teb thiab tej yam kev mob prestress, thiab qhov no yog siv los ua lub hauv paus rau kev tsom xam load thiab shear tsom xam. Tam sim no, cov txheej txheem tseem ceeb rau daim ntawv- nrhiav kev tsom xam hauv cov txheej txheem membrane engineering suav nrog txoj kev so lub zog, txoj kev quab yuam ceev, thiab txoj hauv kev tsis kawg.

III. Load Analysis
Cov loads xam nyob rau hauv membrane qauv engineering feem ntau cua load thiab daus load. Nyob rau hauv load, cov ntaub ntawv membrane deforms ho, thiab cov load faib hloov nrog cov duab. Yog li ntawd, kom raug xam qhov deformation thiab kev ntxhov siab ntawm cov qauv yuav tsum muaj qee qhov kev ntsuas uas tsis yog kab. Lwm qhov taw qhia rau kev ntsuas kev thauj khoom yog txiav txim siab thawj zaug prestress hauv cov cables thiab daim nyias nyias.

IV. Shear Analysis
Nyob rau hauv cov khoom siv sab nraud, qhov kev ntxhov siab nyob rau hauv ib qho kev taw qhia ntawm daim nyias nyias yuav txo qis thaum qhov kev ntxhov siab nyob rau hauv lwm qhov kev taw qhia txo. Qhov no yuav tsum tau hais tias thawj zaug tensile kev nyuaj siab thov yuav tsum muaj txaus los tiv thaiv qhov kev ntxhov siab los ntawm kev txo qis mus rau xoom nyob rau hauv unfavorable loads, piv txwv li, tiv thaiv wrinkling. Vim tias cov ntaub ntawv membrane yog qhov muag heev thiab muaj lub ntuj tsim tsawg heev, lawv nquag ua rau cua vibration hauv cua loads, ua rau cov ntaub ntawv membrane tawg. Yog tias thawj zaug prestress siv siab dhau lawm, cov txheej membrane yuav deform ntau dua, muaj hnub nyoog yooj yim dua, thiab tsis muaj zog cia, yuav tsum muaj zog ntau dua los ntawm kev thauj khoom -cov kabmob thiab ua kom muaj kev tsim kho nyuaj. Yog li ntawd, thawj prestress yuav tsum tau txiav txim los ntawm load tsom xam. Cov txheej txheej membrane tsim los ntawm kev nrhiav pom yog peb -dimensional non-developable spatial curved nto. Yuav ua li cas txiav thiab nro ob-siv cov khoom siv ntawm lub qhov rooj hluav taws xob zawv zawg los ua qhov tsim nyog peb-spatial nkhaus nto yog ib qho teeb meem tseem ceeb hauv qee qhov kev tsim vaj tsev membrane. Qhov no yog cov ntsiab lus tseem ceeb ntawm kev txheeb xyuas txiav.