1 -statika, tegangan, material, mineral dll inggris

8/12/2019 1 -Statika, Tegangan, Material, Mineral Dll Inggris

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BASIC MACHINE

Teknik Kendaraan Ringan

Semester 1ndClass X

Dasar Kompetensi Kejuruan

SK-KD 1TH


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2

DIAGRAM ALUR PENCAPAIAN

KOMPETENSI


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Teknologi dan Rekayasa3

TARGET OF LESSON

Student understand basic static and

strained

Student understand machine element

Student understand basic material and

mineral


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STATIC AND STRAINED


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STATIC

Learn about balanced material, and

the force at the material for balancing

that


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Force is something cause the material move or standby

Force can be illustrated by a vector, is unit have value and direction

The Symbol : F

FORCE


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f = u N Newton

N = Normal force, that upright with material face (Newton)

= friction coefficient at material face (without unit)

F = m (Kg) a (m/s2) = Kg m/s2 = Newton (N)


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Compose to force


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Compose more than 2 force


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Compose force with poligon method


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Compose force by Analitis Method


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To analyze force


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Inertia Force


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Couple


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Balanced

Inertia force F1 to O,

M1 =F1 . a (clockwise),

Inertia force F2 to O,

M2 = +F2 . b (unclockwise)


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Balanced at incline material

FMg = sin

F = W sin dan N = W cos


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STRAINED

Load at material molecule in unit of face large


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The kinds of strained

Normal Strained


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Pull Strained


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Push Strained


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Shift Strained

D = diameter paku keling


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Bend Strained

Mb = momen lengkung

Wb = momen tahanan lengkung


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Twist Strained

Mt = momen puntir (torsi)

Wp = momen tahanan polar (pada puntir)


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UNDERSTAND MACHINE ELEMENT


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SHAFT

Shaft at the machine use for continue power with rotation


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Yoke

Axle is a shaft that does not get the load torque, function only as a drag load,

usually do not spin. For example, as mounted on the wheels of a freight train, or

on trucks as the front.

Spindle

Axis of transmission is relatively short, as the main axis of the machine

tools, where the main burden of torsion

THE KINDS OF SHAFT


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Transmission Shaft

Axis of the transmission function of mechanical energy to move one machine

element to the other machine elements


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LOAD AT THE SHAFT

The axle with the load torque


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Shaft with elastic load

Elastic load at robotic arm


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Shaft with swift and elastic load

Swift and elastic load at arbor


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BEARING

Bearing needed to rivet shaft loaded, in order to turn or move back andforth continuously, and no noise due to friction

Sliding bearings

where there is movement between the shaft and sliding bearings for

shaft surface by the bearing surface with a layer of lubricant

Rolling bearingswhere there is rolling friction between the parts

rotates with the rest through rolling elements such as rollers or needle

rollers


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Based on the weight of the shaft, the bearingsclassified into

Radial bearingwhere the load bearing ditumpu axis perpendicular to the

axis


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Axial bearings,where the load bearing direction is parallel to the axis of the shaft

Special roller bearings,which are bearing the burden rested the direction parallel

and perpendicular to the axis of the shaft.


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MATERIAL AND MINERAL


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MATERIAL

STELL NON STELL

FERRO(iron, steel, and

cast iron)

NON FERRO(gold, silver, and

white tin.

ORGANIC AN ORGANIC

MATERIAL


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MATERIALBASED CHEMICAL ELEMENTS

LOGAM NON LOGAM METALLOID


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FISIKA

KIMIA

PENGERJAAN

MEKANIS

SIFAT LOGAM

STEEL CHARACTERISTIC


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PROPERTIES

MECHANICAL

strength hardness elasticity plasticityrigidity fatique


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MINERAL

Mineral is a lot of material contained in the earth, which has the shape andspecific characteristics and has a fixed chemical composition.

CHARACTERISTIC:

Color For example faucet flashes of gold, tin, and copper metal which has a flash

Crystals or parts of a mineral that has a smooth plane

Density, the mineral has a specific gravity of between 2 to 4 ton/m2.


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MINERAL

STEELbesi,alumunium, mangan,

titanium,tembaga, timah hitam

NON STEEL

Natrium klorida, kalsium fosfat, dan belerang,

pasir, batu kerikil, batu hancur, gips,

dan semen, bahan bakar fosil, Air


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BIBLIOGRAPHY:

BSE Memahami Dasar-Dasar Kejuruan

1 -statika, tegangan, material, mineral dll inggris

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