Ders Bilgileri

#### Ders Tanımı

Ders Kodu Yarıyıl T+U Saat Kredi AKTS
COMPUTATIONAL FRACTURE MECHANICS CMM 507 0 3 + 0 3 6
 Dersin Dili Türkçe Dersin Seviyesi Yüksek Lisans Dersin Türü SECMELI Dersin Koordinatörü Prof.Dr. ALİ OSMAN AYHAN Dersi Verenler Dersin Yardımcıları Dersin Kategorisi Dersin Amacı Many problems faced in engineering applications involve cracking and for accurate life prediction, these problems must be analyzed accurately. Most of the practical problems, on the other hand, involve geometric details and complexities and thus, must be analyzed on computers as numerical models. Therefore, the aim of this course is to provide students with skills for modelling, solving and interpreting two and three-dimensional fracture problems using numerical computer models Dersin İçeriği Introduction, historical summary on development of fracture mechanics. Linear Elastic Fracture Mechanics (LEFM), Stress concentration and singularity, Stress fields for elastic cracks, Stress intensity factor and K-fields. Crack advancement criterion for unstable growth. Experimental methods for LEFM. Fatigue Crack Propagation (FCP). Interface cracks. Numerical methods: singular elements, J-integral. Applications using finite elements: FCPAS, ANSYS.
 Dersin Öğrenme Çıktıları Öğretim Yöntemleri Ölçme Yöntemleri 1 - Defines stress intensity factor and knows its applications. 1 - 2 - 3 - 4 - 5 - A - C - 2 - Defines the stress distribution and plastic zone at the tip of an elastic crack. 1 - 2 - 3 - 4 - 5 - A - C - 3 - Knows the conditions of crack growth under static and fatigue loadings. 1 - 2 - 3 - 4 - 5 - A - C - 4 - Knows the basic materials tests and properties used in fracture mechanics. 1 - 2 - 3 - 4 - 5 - A - C - 5 - Solves two-dimensional fracture problems using singular quarter-point elements. 1 - 2 - 3 - 4 - 5 - A - C - 6 - Solves fracture problems using ANSYS and FCPAS. 1 - 2 - 3 - 4 - 5 - A - C -
 Öğretim Yöntemleri: 1:Lecture 2:Question-Answer 3:Discussion 4:Drilland Practice 5:Demonstration Ölçme Yöntemleri: A:Testing C:Homework

#### Ders Akışı

Hafta Konular ÖnHazırlık
1 Introduction, historical summary on development of fracture mechanics
2 Linear Elastic Fracture Mechanics (LEFM), Stress concentration and singularity
3 Stress fields for elastic cracks, Stress intensity factor and K-fields
4 Crack advancement criterion for unstable growth
5 Experimental methods for LEFM
6 Fatigue Crack Propagation (FCP). Interface cracks
7 Numerical methods: singular elements, J-integral
8 Applications using finite elements: ANSYS
9 Applications using finite elements: ANSYS
10 Mid-term exam
11 Applications using finite elements: FCPAS
12 Applications using finite elements: FCPAS
13 Applications using finite elements: FCPAS
14 Applications using finite elements: FCPAS

#### Kaynaklar

Ders Notu
Ders Kaynakları 1. Fracture Mechanics - An Introduction (E.E. Gdoutos), ISBN: 978-1-4020-2863-2 (Print) 978-1-4020-3153-3 (Online), 2005
2. Elementary Engineering Fracture Mechanics (David Broek), ISBN: 90-247-2580-1, 1986.
3. ANSYS User Manual.

#### Dersin Program Çıktılarına Katkısı

No Program Öğrenme Çıktıları KatkıDüzeyi
1 2 3 4 5

#### Değerlendirme Sistemi

YARIYIL İÇİ ÇALIŞMALARI SIRA KATKI YÜZDESİ
AraSinav 1 50
Odev 1 50
Toplam 100
Yıliçinin Başarıya Oranı 60
Finalin Başarıya Oranı 40
Toplam 100

#### AKTS - İş Yükü

Etkinlik Sayısı Süresi(Saat) Toplam İş yükü(Saat)
Course Duration (Including the exam week: 16x Total course hours) 16 3 48
Hours for off-the-classroom study (Pre-study, practice) 16 3 48
Mid-terms 1 15 15
Assignment 1 15 15
Final examination 1 15 15
Toplam İş Yükü 141
Toplam İş Yükü /25(s) 5.64
Dersin AKTS Kredisi 5.64
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