KONTRAK PERKULIAHAN

STATIKA STRUKTUR

OLEH:I MADE GATOT KAROHIKA, ST.MT

JURUSAN TEKNIK MESIN FT – UNUD,

SEMESTER GENAP 2013-2014

Mechanics

Rigid Bodies(Things that do not change shape)

Deformable Bodies(Things that do change shape) Fluids

Statics Dynamics Incompressible Compressible

Apa itu Mekanika?Mekanika adalah ilmu yang menggambarkan dan meramalkan kondisi benda yang diam atau bergerak karena pengaruh gaya yang beraksi pada benda.

Buku apa yang dipakai?• F. P. Beer and E. R. Johnston Jr., Vector Mechanics for Engineers:

Statics, SI Metric Edition, Mcgraw-hill, atau• F. P. Beer and E. R. Johnston Jr., Mekanika Untuk

Insinyur : STATIKA [TERJEMAHAN; VERSI INDONESIA]• J.L Meriem, dkk, Engineering Mechanics, Statics, John Wiley &

Sons. Inc.• J.L Meriem, dkk, MEKANIKA TEKNIK; STATIKA

[indonesia]• R. C. Hibbeler, Engineering Mechanics, 7th - 12th Edition, Person

Prentice-Hall• Dll• HARUS PUNYA SATU BUKU PEGANGAN DALAM

HARDCOPY

Bagaimana evaluasinya ?• TUGAS : 10 % • AKTIF : 20 %• Quis : 20 %• UTS : 20 % (sifat:………….)• UAS : 30 % (sifat:………….)• Absensi >= 75% : (Maksimal ketidak hadiran

dengan/tanpa alasan 3 kali).• TIDAK ADA UJIAN SUSULAN!!!

KOGNITIF

MEMAHAMI

MENGANALISA

PSIKOMOTORIK

MENIRU

MENGEMBANGKAN

MENYAMPAIKAN PENDAPAT

AFEKTIF

JUJUR

RAJIN

PANTANG MENYERAH

HOW …. Kompetensi

TRANSFORMASI BELAJAR

ORIENTASI BELAJAR

SIKAP BELAJAR

KOMUNIKASI

RUMUS JADI & SOLUSI AKHIR

Kurang mandiri dalam melatih

dan mengembangk

an materi kuliah

Kurang berani dan

tidak mampu berkomunika

si secara sistematis

Pemodelan, analisa,

solusi

Inisiatif mandiri dalam melatih

dan mengembangk

an materi kuliah

Berani dan mampu

berkomunikasi secara

sistematis

Apa saja yang dipelajari?

I. INTRODUCTIONWhat is Mechanics?

Fundamental Concepts

Fundamental Principles

Systems of Units

Method of Problem Solution

Numerical Accuracy

2 - 8

2. STATICS OF PARTICLESIntroductionResultant of Two ForcesVectorsAddition of VectorsResultant of Several Concurrent ForcesSample Problem 2.1Sample Problem 2.2Rectangular Components of a Force: Unit VectorsAddition of Forces by Summing Components

Sample Problem 2.3Equilibrium of a ParticleFree-Body DiagramsSample Problem 2.4Sample Problem 2.6Rectangular Components in SpaceSample Problem 2.7

3 - 9

3. RIGID BODIES: EQUIVALENT SYSTEM OF FORCEIntroductionExternal and Internal ForcesPrinciple of Transmissibility: Equivalent ForcesVector Products of Two VectorsMoment of a Force About a PointVarigon’s TheoremRectangular Components of the Moment of a ForceSample Problem 3.1Scalar Product of Two VectorsScalar Product of Two Vectors:

ApplicationsMixed Triple Product of Three Vectors

Moment of a Force About a Given AxisSample Problem 3.5Moment of a CoupleAddition of CouplesCouples Can Be Represented By VectorsResolution of a Force Into a Force at O

and a CoupleSample Problem 3.6System of Forces: Reduction to a Force

and a CoupleFurther Reduction of a System of ForcesSample Problem 3.8Sample Problem 3.10

4 - 10

4. Equilibrium of Rigid BodiesIntroductionFree-Body DiagramReactions at Supports and Connections for a Two-Dimensional Structur

eEquilibrium of a Rigid Body in Two DimensionsStatically Indeterminate ReactionsSample Problem 4.1Sample Problem 4.3Sample Problem 4.4Equilibrium of a Two-Force BodyEquilibrium of a Three-Force BodySample Problem 4.6

Equilibrium of a Rigid Body in Three Dimensions

Reactions at Supports and Connections for a Three-Dimensional Structure

Sample Problem 4.8

5 - 11

5. Distributed Forces: Centroids and Centers of Gravity

Introduction

Center of Gravity of a 2D Body

Centroids and First Moments of Areas and Lines

Centroids of Common Shapes of Areas

Centroids of Common Shapes of Lines

Composite Plates and Areas

Sample Problem 5.1

Determination of Centroids by Integration

Sample Problem 5.4

Theorems of Pappus-Guldinus

Sample Problem 5.7

Distributed Loads on Beams

Sample Problem 5.9

Center of Gravity of a 3D Body: Centroid of a Volume

Centroids of Common 3D Shapes

Composite 3D Bodies

Sample Problem 5.12

6. Analysis of Structures

6 - 12

IntroductionDefinition of a TrussSimple TrussesAnalysis of Trusses by the Method of JointsJoints Under Special Loading

ConditionsSpace TrussesSample Problem 6.1Analysis of Trusses by the Method of Sections

Trusses Made of Several Simple TrussesSample Problem 6.3Analysis of Frames

Frames Which Cease to be Rigid When Detached From Their Supports

Sample Problem 6.4

Machines

7- 13

7. Forces in Beams and Cables

IntroductionInternal Forces in MembersSample Problem 7.1Various Types of Beam Loading and SupportShear and Bending Moment in a BeamSample Problem 7.2Sample Problem 7.3Relations Among Load, Shear, and

Bending Moment

Sample Problem 7.4Sample Problem 7.6Cables With Concentrated LoadsCables With Distributed LoadsParabolic CableSample Problem 7.8Catenary

8 - 14

8. FRICTIONIntroduction

Laws of Dry Friction. Coefficients of Friction.

Angles of Friction

Problems Involving Dry Friction

Sample Problem 8.1

Sample Problem 8.3

Wedges

Square-Threaded Screws

Sample Problem 8.5

Journal Bearings. Axle Friction.

Thrust Bearings. Disk Friction.

Wheel Friction. Rolling Resistance.

Sample Problem 8.6

Belt Friction.

Sample Problem 8.8

9 - 15

9. Distributed Forces: Moments of InertiaIntroductionMoments of Inertia of an AreaMoment of Inertia of an Area by IntegrationPolar Moment of InertiaRadius of Gyration of an AreaSample Problem 9.1Sample Problem 9.2Parallel Axis TheoremMoments of Inertia of Composite AreasSample Problem 9.4Sample Problem 9.5Product of InertiaPrincipal Axes and Principal Moments

of Inertia

Sample Problem 9.6Sample Problem 9.7Mohr’s Circle for Moments and Products of

InertiaSample Problem 9.8Moment of Inertia of a MassParallel Axis TheoremMoment of Inertia of Thin PlatesMoment of Inertia of a 3D Body by

IntegrationMoment of Inertia of Common Geometric

ShapesSample Problem 9.12Moment of Inertia With Respect to an

Arbitrary AxisEllipsoid of Inertia. Principle Axes of Axes

of Inertia of a Mass

10. Method of Virtual Work

10 - 16

IntroductionWork of a ForceWork of a CouplePrinciple of Virtual WorkApplications of the Principle of Virtual WorkReal Machines. Mechanical EfficiencySample Problem 10.1Sample Problem 10.2Sample Problem 10.3Work of a Force During a Finite DisplacementPotential EnergyPotential Energy and EquilibriumStability and EquilibriumSample Problems 10.4

Apa yang harus dilakukan supaya Statika Struktur menjadi mudah ?

Banyak dan sering menyelesaikan soal-soal

Prosedur mengerjakan soal:1. Baca soal dengan cermat2. Buat free body diagram dan tabulasikan data soal3. Tuliskan prinsip dasar / persamaan yang relevan dengan

soal4. Selesaikan persamaan sepraktis mungkin sehingga didapat

hasil yang signifikan dan jangan lupa disertai sistem satuan5. Pelajari jawaban dengan akal sehat, masuk akal atau tidak6. Jika ada waktu, coba pikirkan cara lain untuk menyelesaikan

soal tersebut.