C0041 Friction Coefficient Tester

Iyi ndi mita yogwira ntchito kwambiri, yomwe imatha kudziwa mosavuta ma coefficients amphamvu komanso osasunthika azinthu zosiyanasiyana, monga mafilimu, mapulasitiki, mapepala, ndi zina zambiri.

Coefficient of friction ndi chimodzi mwazinthu zofunika kwambiri zazinthu zosiyanasiyana.
Pamene pali mayendedwe wachibale pakati pa zinthu ziwiri kukhudzana wina ndi mzake
Kapena kusuntha kwachibale, malo olumikizana amatulutsa
Mphamvu yamakina yomwe imalepheretsa kuyenda kwachibale ndi kukangana
mphamvu. Kukangana kwa chinthu china kungadziwike ndi zinthuzo
Kuti muwonetse mawonekedwe amphamvu komanso static friction coefficient. Kukangana kokhazikika ndi ziwiri
Kukaniza kwakukulu kwa kukhudzana pamwamba pa chiyambi cha kayendedwe wachibale,
Chiŵerengero chake ndi mphamvu yachibadwa ndi coefficient of static friction; mphamvu ya kukangana kosunthika ndiko kukana pamene malo awiri olumikizana amayenda molingana ndi liwiro linalake, ndipo chiŵerengero cha chiŵerengero chake ndi mphamvu yachibadwa ndi coefficient of dynamic kukangana. Kugundana koyezera ndi kwa gulu la ma friction pairs. Ndizopanda tanthauzo kungonena kugundana kwa chinthu china. Panthawi imodzimodziyo, m'pofunika kufotokoza mtundu wa zinthu zomwe zimapanga mikangano iwiri ndikulongosola mikhalidwe yoyezetsa (kutentha kozungulira ndi chinyezi, katundu, liwiro, etc.) Ndipo kutsetsereka zakuthupi.

Njira yodziwira friction coefficient ndi yofanana: gwiritsani ntchito mbale yoyesera (yoyikidwa pa tebulo loyang'ana yopingasa), konzani chitsanzo chimodzi pa mbale yoyesera ndi guluu wa mbali ziwiri kapena njira zina, ndi kukonza chitsanzo china chikadulidwa bwino. Pa slider yodzipatulira, ikani slider pakati pa chitsanzo choyamba pa bolodi yoyesera molingana ndi malangizo enieni ogwiritsira ntchito, ndipo pangani njira yoyesera ya zitsanzo ziwirizo kuti zifanane ndi njira yotsetsereka ndipo dongosolo la kuyeza mphamvu silinatsindikidwe. Nthawi zambiri tengerani mawonekedwe otsatirawa a mawonekedwe.

Mfundo zotsatirazi ziyenera kufotokozedwa pamayeso a friction coefficient:
Choyamba, njira zoyezera zama friction coefficient zimachokera ku ASTM D1894 ndi ISO 8295 (GB 10006 ndiyofanana ndi ISO 8295). Pakati pawo, njira yopangira bolodi yoyesera (yomwe imatchedwanso benchi yoyesera) ndiyofunika kwambiri, osati pa tebulo lokhalo lomwe liyenera kutsimikiziridwa Mlingo ndi kusalala kwa chinthucho ziyenera kupangidwa ndi zinthu zopanda maginito. Miyezo yosiyana imakhala ndi zofunikira zosiyanasiyana pazoyeserera. Mwachitsanzo, posankha liwiro la mayeso, ASTM D1894 imafuna 150±30mm/mphindi, koma ISO 8295 (GB 10006 ndi yofanana ndi ISO 8295) imafuna 100mm/mphindi. Kuthamanga kosiyana koyesa kudzakhudza kwambiri zotsatira za mayesero.
Chachiwiri, kuyesa kwa kutentha kumatha kuchitika. Tiyenera kuzindikira kuti pamene kuyesa kutentha kumachitidwa, kutentha kwa slider kuyenera kutsimikiziridwa kukhala kutentha, ndipo bolodi loyesera lokha liyenera kutenthedwa. Izi zanenedwa momveka bwino mu ASTM D1894 standard.
Chachitatu, mawonekedwe omwewo angagwiritsidwe ntchito kuti azindikire kugundana kwazitsulo ndi mapepala, koma pazinthu zosiyanasiyana zoyesera, kulemera, sitiroko, liwiro ndi magawo ena a slider ndi osiyana.
Chachinayi, pogwiritsira ntchito njirayi, muyenera kumvetsera chikoka cha inertia ya chinthu chosuntha pamayeso.
Chachisanu, nthawi zambiri, kugundana kwazinthu kumakhala kosakwana 1, koma zolemba zina zimatchulanso za momwe kugundana kumakulirakulira kuposa 1, mwachitsanzo, kugunda kwamphamvu pakati pa mphira ndi chitsulo kumakhala pakati pa 1 ndi 4.

Zinthu zofunika kuziganizira poyesa friction coefficient:
Pamene kutentha kumawonjezeka, kugundana kwa mafilimu ena kudzawonetsa kukwera. Kumbali imodzi, izi zimatsimikiziridwa ndi mawonekedwe a zinthu za polima zokha, ndipo kumbali ina, zimagwirizana ndi mafuta omwe amagwiritsidwa ntchito popanga filimu (mafuta odzola kwambiri Akhoza kukhala pafupi ndi malo ake osungunuka ndikukhala omata). ). Kutentha kumakwera, kusinthasintha kwamtundu wa mphamvu yoyezera mphamvu kumawonjezeka mpaka chodabwitsa cha "stick-slip" chikuwonekera.