MANUAL SOFTWARE GRASP (Graphical Rapid Analysis of Structure Program)
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Transcript of MANUAL SOFTWARE GRASP (Graphical Rapid Analysis of Structure Program)
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MANUAL SOFTWARE GRASP(Graphical Rapid Analysis of Structure
Program)
Kegunaan :Analisis struktur Frame dan Truss 2 Dimensi1. Gaya-gaya dalam (Internal Forces) :• Gaya Momen (M)• Gaya Lintang/Geser (V)• Gaya Normal/Aksial (P)
2. Deformasi Struktur :• Translasi Horisontal (dx)• Translasi Vertikal (dy)• Rotasi (rz)
3. Reaksi Perletakkan/Tumpuan :• Reaksi Horisontal (Rx)• Reaksi Vertikal (Ry)• Momen (Mz)
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KEISTIMEWAAN GRASP
1. Model struktur langsung dirancang pada layar secara
grafis.
2. Tidak perlu menguraikan jumlah titik simpul dan
jumlah batang.
3. Penampang melintang batang dapat dipilih dari
delapan tipe penampang yang tersedia.
4. Jenis tumpuan/perletakkan dapat dipilih dari
duabelas tipe tumpuan yang tersedia.
5. Struktur Wizard menjadikan permodelan struktur
lebih sederhana.
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KEISTIMEWAAN GRASP
6. Menyediakan pilihan beban pada titik simpul dan
pada batang dalam jumlah yang banyak (beban
segiempat, segitiga, trapesium, suhu, dll.).
7. Model struktur ditampilkan dan dicetak secara grafis.
8. Hasil analisis dapat ditampilkan dan dicetak untuk
seluruh struktur dalam bentuk diagram beserta nilai
dan tabelnya.
9. Menyediakan tampilan yang interatif, mudah dalam
penggunaannya, dan memungkinkan pemakai
berinteraksi dalam lingkungan grafis pada waktu
membuat model struktur dan analisisnya.
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SPESIFIKASI KOMPUTER
1. IBM PC atau Compatible 386+
2. Memory minimal 8 MB.
3. Kapasitas Hardisk minimal 12 MB.
4. VGA Monitor 800 x 600.
5. Windows 3.1 atau Win 95.
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MENU GRASP(FILE)
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MENU GRASP(EDIT - STRUCTURE)
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MENU GRASP(LOADING - PERFORM)
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MENU GRASP(VIEW)
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MENU GRASP(TABLES – OPTIONS - HELP)
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TOOLBARS GRASP
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ANALYSIS
END
RESULTS
TABLERESULTS
DIAGRAM(M,L,N,)
START
NEW-OPEN-SAVE UNIT
PROJECT INFO
PROPERTIES
SETTING GRID
CUSTOMIZE
GEOMETRISTRUKTUR
RESTRAINTS
LOADS
NODAL LOADS
MEMBER LOADS
MODELSTRUKTUR
FRAME
TRUSS
COLOR
FILE
UNITSMEMBERPROPERTIES
MATERIALPROPERTIES
FLOWCHARTGRASP
WAJIB
TIDAKWAJIB
HASIL
KET :
MANUAL
STRUCTUREWIZARD
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START
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NEW-OPEN-SAVE
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UNITS….
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GRID…(Ctrl+G)
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CUSTOMIZE…
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PROJECT INFO…
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MODEL STRUKTUR
FRAME TRUSS
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GEOMETRI STRUKTUR
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PROPERTIES
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RESTRAINTS
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SISTEM KOORDINAT GLOBAL
Sistem Koordinat Global adalah sistem koordinat Cartesian tangan kanan. Pada pengaplikasian struktur 2-D maka Grasp menggunakan sumbu Global dengan aksis-aksis X, dan Y. Untuk arah sumbu X positif kearah kanan dan sumbu Y positif kearah atas.
X
YZ
3 - D
X
Y
Z
2 - D
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SISTEM KOORDINAT GLOBAL
Input data yang berdasarkan Sistem Koordinat Global :
• Koordinat Joint
• Derajat kebebasan suatu joint (Restraint)
• Pembebanan pada Joint (Loads)
• Constraint pada Joint
• Perpindahan pada suatu Joint
Output data yang berdasarkan Sistem Koordinat Global :
• Perpindahan yang terjadi pada suatu joint
• Reaksi yang terjadi pada joint
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SISTEM KOORDINAT LOKAL
Sistem Koordinat Lokal juga mengikuti sistem sumbu Cartesien, untuk kasus 2-D masing-masing elemen memiliki aksis-aksis x, dan y yang arahnya mengikuti kaidah tangan kanan.
Sistem koordinat ini untuk menentukan arah atau posisi elemen yang relatif terhadap aksis Koordinat Global.
z
y
x
y
x y x
y
xy
x
Sb. Lokal
Y
XSb. Global
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SISTEM KOORDINAT LOKAL
Input data yang berdasarkan Sistem Koordinat Lokal :• Sifat Potongan suatu elemen• Pembebanan pada elemen
Output data yang berdasarkan Sistem Koordinat Lokal :
• Arah gaya pada elemen
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LOADS
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ANALYSIS BALOK(BEA
M)
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ANALYSISPORTAL (PLANE
FRAME)
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ANALYSISRANGKA (PLANE
TRUSS)
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PERJANJIAN TANDA GAYA DALAM
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RESULTS
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STRUCTURE WIZARD…
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