| dc.contributor.advisor | Tanık, Engin | |
| dc.contributor.author | Karakuş, Raşit | |
| dc.date.accessioned | 2019-04-12T08:37:11Z | |
| dc.date.issued | 2019-03-21 | |
| dc.date.submitted | 2019-03-14 | |
| dc.identifier.citation | Karakus,Rasit,Transmission Angle in Compliant-Four Bar Mechanisms,Ankara, Hacettepe Üniversitesi Fen Bilimleri Enstütüsü, makine Mühendisliği Doktora tezi,2019 | tr_TR |
| dc.identifier.other | 10241476 | |
| dc.identifier.uri | http://hdl.handle.net/11655/6559 | |
| dc.description.abstract | Transmission angle is an important parameter in defining quality of motion and force transmission of a mechanism. However, there is only one study available in the literature which is the transmission angle of a compliant slider-crank mechanism (Tanık, 2011, volume 46, Issue 11). The compliant mechanisms can be modelled with rigid link and springs. Addition of springs makes the problem very difficult. In this thesis, the transmission angle formula suitable for fully compliant and (all types) partially compliant four-bar mechanisms is determined. Special cases are discussed and four theorems are introduced. Similarities and dissimilarities between compliant four-bar and its rigid body counterpart are introduced. We believe that, the transmission angle formula and the devised theorems will be useful for the compliant mechanism designers and researchers. | tr_TR |
| dc.description.tableofcontents | 1 INTRODUCTION 1
1.1 Scope 2
1.2 Compliant Mechanisms 2
1.2.1 Advantages of Compliant Mechanisms 3
1.2.2 Disadvantages of Compliant Mechanisms 4
2 FLEXIBILITY & DEFLECTION 6
2.1 Stiffness and Strength 6
2.2 Flexibility 7
2.3 Material Consideration 7
2.4 Linear Elastic Deformations 8
2.5 Energy Storage 9
3 COMPLIANT MECHANISM ANALYSIS TOOLS 11
3.1 Pseudo Rigid Body Model 11
3.2 Small-Length Flexural Pivots 11
3.3 Cantilever Beam with a Force at the Free End 14
3.3.1 Force and Stress Analysis of the Cantilever Beam with Force at the Free End Using Parametric Approximation of the Beams’ Deflection Path 15
3.4 Transformation between Compliant Mechanisms and PRBM 20
4 TRANSMISSION ANGLE 22
4.1 Transmission Angle in Rigid (Conventional) Planar Four-Bar Mechanisms 22
4.2 Upper and Lower Limits of Transmission Angle of Rigid Four-Bar Mechanism 23
4.3 Optimum transmission angle 24
5 TRANSMISSION ANGLE IN COMPLIANT 4-BAR MECHANISM 25
5.1 Force Analysis of the Fully Compliant Four-Bar Mechanism 26
5.1.1 Transmission angle of fully compliant four-bar mechanism according to Alt’s definition 30
5.1.2 Rigid four bar mechanism input-output force relationship 32
5.1.3 The theorem (1) for the input link spring and the transmission angle relationship 37
6 PROPERTIES OF THE TRANSMISSION ANGLE OF A COMPLIANT FOUR-BAR MECHANISMS FOR SOME SPECIAL CASES 41
6.1.1 The theorem (2) for the coupler springs and the transmission angle relationship 41
6.1.2 The theorem (3) for absolute locking condition 43
6.1.3 The theorem (4) for similarity of the transmission angle with the rigid version 44
7 TRANSMISSION ANGLES OF ALL COMBINATION OF THE PARTIALLY COMPLIANT FOUR-BAR MECHANISMS 51
8 TRANSMISSION ANGLE AND INPUT TORQUE RELATIONSHIP OF COMPLIANT FOUR-BAR MECHANISM 72
9 CONCLUSION 80
BIBLIOGRAPHY 82
APPENDIX 84
ORIGINATILY REPORT 96
CURRICULUM VITAE 97 | tr_TR |
| dc.language.iso | en | tr_TR |
| dc.publisher | Fen Bilimleri Enstitüsü | tr_TR |
| dc.rights | info:eu-repo/semantics/openAccess | tr_TR |
| dc.subject | Compliant mechanism | tr_en |
| dc.subject | Compliant four-bar mechanism | tr_en |
| dc.subject | Transmission angle | tr_en |
| dc.title | Transmission Angle in Compliant Four-Bar Mechanisms | tr_TR |
| dc.type | info:eu-repo/semantics/doctoralThesis | tr_TR |
| dc.description.ozet | Aktarma açısı, mekanizmaların hareket ve kuvvet iletim kalitesini tanımlayan önemli bir parametredir. Literatürde, esnek mekanizmaların aktarma açısını tanımlayan sadece bir adet yayın olduğu gözlemlenmiştir. (Tanık, 2011, volume 46, Issue 11). Esnek mekanizmalar, katı uzuvlar ve burulma yayları kullanılarak modellenebilirler. Mekanizmaya burulma yaylarını eklemek mekanizma sentezi ve analizinin çok daha karmaşık hale gelmesine neden olmaktadır. Bu tezde tamamen esnek ya da kısmen esnek tüm dört-çubuk mekanizmalarının aktarma açısını veren bir denklem elde edilmiştir. Ayrıca esnek ve katı dört çubuk mekanizmalarının benzerlikleri ve farklılıkları üzerinden dört adet de teorem türetilmiştir. Bu formül ve teoremlerin literatüre kayda değer katkısı olacağı ve formül ve teoremlerden esnek mekanizmalar alanında çalışan tasarımcı ve araştırmacıların faydalanacağı öngörülmektedir. | tr_TR |
| dc.contributor.department | Makine Mühendisliği | tr_TR |
| dc.contributor.authorID | 169694 | tr_TR |
| dc.embargo.terms | 6 ay | tr_TR |
| dc.embargo.lift | 2019-10-15T08:37:11Z | |
