C0041 Ho'āʻo Hoʻohui Paʻi

ʻO kēia ka mīkini hoʻoheheʻe friction hana nui, hiki ke hoʻoholo maʻalahi i ka coefficient dynamic a me static friction coefficient o nā ʻano mea like ʻole, e like me nā kiʻiʻoniʻoni, plastics, pepa, etc.

ʻO ka coefficient o friction kekahi o nā waiwai kumu o nā mea like ʻole.
Ke neʻe pili i waena o nā mea ʻelua e pili ana kekahi i kekahi
A i ʻole ke ʻano o ka neʻe ʻana, hana ka ʻili pili
ʻO ka ikaika mechanical e ālai ana i ka neʻe pili ʻana, ʻo ia ka friction
ikaika. Hiki ke hoʻoholo ʻia nā ʻano friction o kekahi mea e ka mea
No ka hoʻohālikelike ʻana i ka coefficient friction dynamic a static. ʻElua ʻano kuʻekuʻe static
ʻO ke kūpaʻa kiʻekiʻe loa o ka ʻili pili i ka hoʻomaka ʻana o ka neʻe pili,
ʻO ka lakio o kona me ka ikaika maʻamau, ʻo ia ke koena o ka friction static; ʻO ka ikaika friction ikaika ke kū'ē i ka neʻe ʻana o nā ʻaoʻao pili ʻelua e pili ana i kekahi i kekahi i kekahi wikiwiki, a ʻo ka ratio o kona lakio i ka ikaika maʻamau ka coefficient o ka friction dynamic. ʻO ka pānaʻi hoʻoheheʻe no ka pūʻulu o nā hui pālua. He mea ʻole ka ʻōlelo wale ʻana i ke koena friction o kekahi mea. I ka manawa like, pono e kuhikuhi i ke ʻano o ka mea e haku ai i ka friction pair a kuhikuhi i nā kūlana hoʻāʻo (ambient wela a me ka haʻahaʻa, ka ukana, ka wikiwiki, a me nā mea ʻē aʻe) A me nā mea sliding.

He ʻano like ke ʻano o ka ʻike ʻana i ka friction coefficient: e hoʻohana i kahi pā hoʻāʻo (i kau ʻia ma ka papa hana ʻāpae), hoʻopaʻa i hoʻokahi laʻana ma ka pā hoʻāʻo me ke kolu ʻaoʻao ʻelua a i ʻole nā ​​ala ʻē aʻe, a hoʻoponopono i ka hāpana ʻē aʻe ma hope o ke ʻoki pono ʻana. Ma luna o ka paheʻe hoʻolaʻa, kau i ka paheʻe i waenakonu o ka hāpana mua ma ka papa hoʻāʻo e like me nā kuhikuhi hana kikoʻī, a hana i ke kuhikuhi hoʻāʻo o nā laʻana ʻelua e like me ke kuhikuhi ʻana a ʻaʻole i koʻikoʻi ka ʻōnaehana ana ikaika. Hoʻohana maʻamau i kēia ʻano o ka ʻōnaehana ʻike.

Pono e wehewehe ʻia nā ʻōlelo aʻe no ka hoʻāʻo ʻana o ka friction coefficient:
ʻO ka mea mua, ʻo ke ʻano o ka hoʻāʻo ʻana no ka film friction coefficient e pili ana i ka ASTM D1894 a me ISO 8295 (GB 10006 e like me ISO 8295). I waena o lākou, ʻo ke kaʻina hana o ka papa hoʻāʻo (i kapa ʻia ʻo ka papa hoʻāʻo) he koi nui, ʻaʻole pono e hōʻoia ʻia ka papa ʻaina ʻO ka pae a me ka maʻalahi o ka huahana e hana ʻia i nā mea non-magnetic. Loaʻa i nā kūlana like ʻole nā ​​koi like ʻole no nā kūlana hoʻāʻo. No ka laʻana, no ke koho ʻana i ka wikiwiki hoʻāʻo, koi ʻo ASTM D1894 i 150 ± 30mm/min, akā ʻo ISO 8295 (GB 10006 e like me ISO 8295) koi 100mm/min. ʻO nā wikiwiki ho'āʻo likeʻole e pili nui i nā hopena ho'āʻo.
ʻO ka lua, hiki ke hoʻokōʻia ka ho'āʻo hoʻomehana. Pono e hoʻomaopopoʻia i ka wā e hanaʻia ai ka ho'āʻo hoʻomehana, pono e hoʻopaʻaʻia ka mahana o ka slider i ka mahana wela, aʻo ka papa ho'āʻo wale nō e wela. Hōʻike maopopo ʻia kēia ma ka maʻamau ASTM D1894.
ʻO ke kolu, hiki ke hoʻohana ʻia ka ʻōnaehana hoʻāʻo like e ʻike i ka coefficient friction o nā metala a me nā pepa, akā no nā mea hoʻāʻo like ʻole, ʻokoʻa ke kaumaha, ka hahau, ka wikiwiki a me nā ʻāpana ʻē aʻe o ka slider.
ʻO ka hā, i ka hoʻohana ʻana i kēia ʻano, pono ʻoe e hoʻolohe i ka mana o ka inertia o ka mea neʻe i ka hoʻāʻo.
ʻO ka ʻelima, ʻo ka mea maʻamau, ʻoi aku ka liʻiliʻi o ka coefficient friction o ka mea ma mua o 1, akā ʻōlelo pū kekahi mau palapala i ka hihia i ʻoi aku ka nui o ka friction coefficient ma mua o 1, no ka laʻana, ʻo ka coefficient friction ikaika ma waena o ka lāʻau a me ka metala ma waena o 1 a me 4.

ʻO nā mea e pono ai ka nānā ʻana i ka hoʻāʻo ʻana i ka friction coefficient:
I ka piʻi ʻana o ka mahana, e hōʻike ana ka friction coefficient o kekahi mau kiʻiʻoniʻoni i kahi ʻano piʻi. Ma kekahiʻaoʻao, ua hoʻoholoʻia kēia e nā hiʻohiʻona o ka mea polymer pono'ī, a ma kekahiʻaoʻao, pili ia i ka lubricant i hoʻohanaʻia i ka hana kiʻiʻoniʻoni (ʻoi loa ka lubricant Hiki ke kokoke i kona helu heheʻe a lilo i paʻa. ). Ma hope o ka piʻi ʻana o ka mahana, piʻi ka laulā o ke ana ʻana o ka ikaika a hiki i ka ʻike ʻia ʻana o ka "stick-slip".