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Mechanical Engineering club
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you are a mechanical engineer??
or interested or have questions in mechanical engineering?
join this board....
nice to know ya.... 
what is mechanical engineering?
Mechanical engineering is an engineering discipline that involves the application of principles of physics for analysis, design, manufacturing, and maintenance of mechanical systems. It requires a solid understanding of key concepts including mechanics, kinematics, thermodynamics and energy. Practitioners of mechanical engineering, known as mechanical engineers, use these principles and others in the design and analysis of automobiles, aircraft, heating & cooling systems, manufacturing plants, industrial equipment and machinery, and more.
which area mechanical engineering revolves around?
*statics & dynamics
*strength of materials & solid mechanics,
*instrumentation and measurement,
*thermodynamics, heat transfer, energy conversion, and refrigeration / air conditioning,
*fluid mechanics/fluid dynamics,
*mechanism design (including kinematics and dynamics),
*manufacturing technology or processes,
*hydraulics & pneumatics,
*engineering design,
*mechatronics and/or control theory,
*drafting, CAD (usually including Solid modeling), and CAM.
This is new mechanical engineering field. In design stage, known as Affective Engineering
http://forum.cari.com.my/viewthread.php?tid=272815
No matter you are mechanical engineer or not,
please feel free to ask anything regarding mechanical engineering or physics....
in professional and logical manner
If I know I will try to answer you; if not I will seek reference and need some time.. if still cant, then other senior mechanical engineer might be able to answer you
[ Last edited by wei_loon5063 at 11-5-2007 07:30 AM ] |
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I'm not mechanical engineer..
but last time I'm doing fluid dynamics..
and now CAD and CAE... |
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Reply #2 padlie's post
Cool.........
CAD... Computer Aided Design....... |
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Reply #3 wei_loon5063's post
yup, Computer Aided Design and Computer Aided Engineering..
Playing around on finite element analysis  |
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Mechanical Engineer reporting for duty. |
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Playing around on finite element analysis
I hate that subject last sem...... damm it was hard......
endless derivations...........
working now? |
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Mechanical Engineer reporting for duty.
Working in enterprise with Data eh beanie??
how`s work in LA?
which area?? |
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Aku nak masuk tapi taktau apa2 pasal engineering.... accounting tau ler... |
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Reply #8 LanoG's post
tak apa............
apa apa tentang engineering atau physics yang tak faham boleh tanya |
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wei loon... kenapa satu bualatan 360 darjah? kenapa tak 3 ke, 10 ke, 400 ke, atau pun nilai2 lain? |
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Kalau tak silap, orang Maya yang terawal sekali jumpe bulatan saiz 360 darjah kan. |
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Originally posted by mziskandar at 9-5-2007 05:12 PM
wei loon... kenapa satu bualatan 360 darjah? kenapa tak 3 ke, 10 ke, 400 ke, atau pun nilai2 lain?
Bagus soalan....
semua benda di dunia ini tak ada yang pasti.....
360 itu adalah numbor... sahaja... seperti jam..
jangka dia perlu tetap.... 24 jam.. kau boleh tukar kepada 30 jam.. tapi minit dan saat perlu tukar jangka supaya jangka 30 jam sama dengan 24 jam......
dalam engineering, tak guna darjah.. tapi Radian nisbah...
pai.....
ia adalah huruf greek....
ia adalah nisbah... ia itu 22 bahagi dengan 7.....
tak akan habis kau bahagi... jadi ia adalah 3.142...
apa maksud 3.142 itu??
maksud dia.. bulatan.... lilitan dia dan jejari dia.... S=2*r*pai
makna dia, secentimetre jejari bulatan, maka lilitan itu adalah 6.284 cm...
pai boleh jadi 5 atau 5.... tapi jarak meter kenela ubah untuk suaikan hubungan dia...
S;r;a; apa apa huruf pun tak apa.. maksud dia paling penting..
semua benda dunia ini tak ada bentuk.. manusia bagi bentuk kepada nya dan bentuk itu adalah mempunyai hunungan denan yang lain.. ia tak boleh wujud dengan sendiri...
kau akan tanya.. kenapa satu metre panjang itu......
panjang itu tak ada yang tetap.. tetapi orang perancis had kan panjang itu kepada satu meter...
berapa panjang? mereka ambil hadlaju cahaya.. satu nisbah antara jarak dan masa yang tetap walaupun kemana
hadlaju cahaya adalah 300,000,000 meter per saat
apa makna itu?? dalam satu saat cahaya bergerak 300,000,000
tapi meter dan saat tak wujud...
meter di hadkan dengan kata jarak yang cahaya jalan dengan masa 0.00000000333.... saat......
saat pula?? tak ada bentuk, manusia kata satu saat adalah masa yang cahaya gerak sejauh 300,000,000meter
tengok?? semua benda adalah saling ada hubungan antara satu sama lain......
kau kene tengok lebih dari numbor... maksud sebalik numbor...
bulatan boleh jadi 1000 darjah....
tapi hubungan dia masih sama....
180 darjah atau 500 darjah atau 2334 darjah... tetap makna separuh bulatan......
ok?? lihat maksud sebalik unit daln numbor... metre, kg, saat semua di setkan oleh orang perantis.. dikenali sebagai SI unit....
kau boleh tak ikut dia.. tapi dalam otak kau... mesti KONSISTENT... dan hubungan antara unit itu mestilah sama hubungan dengan SI unit.. tak kira bentuk apa...
[ Last edited by wei_loon5063 at 9-5-2007 05:44 PM ] |
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dah berbelas tahun aku cuba carik perfect number for bulatan (since aku skolah rendah). tapi still x jumpa.
kalau dpt perfect number tu, 3d graphics x yah pakai phi - so dpt eliminate infinite floating point(fp) - so calculation without fp will be millions times faster (if calculation being done for millions of triangles) |
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infinite floating point(fp) ??
Ko computer programmer ker??
cerita apa fp?? |
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floating point tu string of numbers. kalau eg dlm c: 0.0, 2423.0, 0.2342342
so kalau buat rotation kat object, pakai phi. math operation akan ada banyak decimal places - accuracy. computer punya weakness kat fp.
hehe... aku blasah jer. sbb tu yg aku paham.. programming pun blaja sendiri jer... |
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OOooo.............
Pi pun bahagi tak habis..... sebab tu la jam........
pernah kat lab pc, aku tekan salah, C++
tekan 1/0... pc itu kira tak henti henti sampai beberapa pc di lab jam |
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Originally posted by wei_loon5063 at 5/9/07 01:34 AM
dalam engineering, tak guna darjah.. tapi Radian nisbah...
I'd say that most of our equations in engineering we use radian. But we still use degree in engineering though. For example, the engineering drawings that I've used mostly shows angles in deg, not radian.
But yes, 360deg for one full rotation is just an arbitrary selection. Just like 0 degC for freezing temperature of water. Why not 0 be the freezing temprature of something else right? It's just what some people decided it to be, in my opinion. |
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what kind of CAD and FEA have u guys used? which ones were taught in school? |
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Category: Belia & Informasi
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Post time 8-5-2007 10:24 PM
变色卡
Author
Post time 9-5-2007 05:12 PM
).
It ain't school no more. You've got to figure out stuff yourself or bother someone with has lots of work to do. Good thing is after 5pm it's over. Unlike in college when it ain't over till it's too late to sleep.
