Luca Dassa – 02/03/2015 1 / 8 CRAB cavities meeting Bolt size (1) We are dealing with material where Yield strength and tensile strength are very close!

Slides:

Advertisements

Similar presentations

Various Fasteners Non-permanent fasteners (threaded)

Advertisements

Quality and Tests. Purchasing, forming and manufacturing only the best material Latest production technology is the guarantee for highest quality on a.

Fasteners / Joint Design Michael Kalish NSTX TF FLAG JOINT REVIEW 8/7/03.

Professor Joe Greene CSU, CHICO

Manufacturing Technology

Course Title: Strength of Materials (CVE 202)

Connection Design.

Designing for Stiffness

Methods of Attaching Components to a Shaft

BOLTS TENSION MEMBERS AISC / LRFD WILD CARD

Home Work #3 Due Date: 11 Mar, 2010 (Turn in your assignment at the mail box of S581 outside the ME general office) The solutions must be written on single-side.

Slide HALLD TAGGER MAGNET STRUCTURAL ANALYSIS Presented by William Crahen 6/10/09 Pole Plate analysis Vacuum chamber analysis Vacuum chamber tie rods and.

Shear - Tensile - Compression Stresses Slip Ted 126 Spring 2007.

CM 197 Mechanics of Materials Chap 20: Connections

Leaning objectives Axial Stress

Component Testing Test Setup TapLok Insert Shear Key Copper Threads Friction Tests Collar Shear Tests NSTX TF FLAG JOINT REVIEW 8/7/03 Michael Kalish.

Lecture # 2 Allowable Stress Objective:

Analysis of Basic Load Cases Axial Stress

FE calculations for the bolted helium vessel May 6th 2015

Fasteners / Joint Design Michael Kalish NSTX TF FLAG JOINT REVIEW 8/7/03.

LHC CRAB CAVITY He Tank DQW Prototype P.Freijedo-Menendez C.Zanoni L.Giordanino R.Leuxe.

Luca Dassa – 01/05/ / 5 CRAB cavities meeting Bolts Titanium Grade 6 bolts Jeveka has found a supplier They say the cost is very high but on offer.

PROBLEM-1 State of stress at a point is represented by the element shown. Determine the state of stress at the point on another element orientated 30

Static and Fatigue Bolt Design

Rehabilitation and maintenance of buildings - 03

Bolted joint failure modes

ME 307 Machine Design I ME 307 Machine Design I Dr. A. Aziz BazouneChapter 8: Screws, Fasteners and the Design of Nonpermanent Joints CH-8 LEC 35 Slide.

Strength of Material Shear Strain Dr. Attaullah Shah.

 2005 Pearson Education South Asia Pte Ltd TUTORIAL-1 : UNIAXIAL LOAD 1 PROBLEM-1 1 m P A composite A-36 steel bar shown in the figure has 2 segments,

1 RF-Structures Mock-Up FEA Assembly Tooling V. Soldatov, F. Rossi, R. Raatikainen

PROBLEM mm x y 800 mm P = 1500 N z y 50 mm 100 mm

University of Sydney – Structures SECTIONS Peter Smith & Mike Rosenman l The size and shape of the cross- section of the piece of material used l For timber,

Thermal Strains and Element of the Theory of Plasticity

Chapter 10 Web splice.

Luca Dassa – 23/02/ / 8 CRAB cavities meeting Preload Bolt size (1) Shear load: 602 N (p=0.26 MPa) -> Min preload: 2006 with Static friction coefficient:

Shear stress versus shear strain For homogeneous & isotropic materials pure shear causes angular distortion of a material as shown above. Pure shear is.

Multiple Coil Lift Calculation. Purposes of the Study  To investigate the stress distribution in the MCWF and the lifting device.  To make sure mounting.

 2005 Pearson Education South Asia Pte Ltd TUTORIAL-1 : UNIAXIAL LOAD 1 PROBLEM-1 1 m P A composite A-36 steel bar shown in the figure has 2 segments,

 2005 Pearson Education South Asia Pte Ltd TUTORIAL-1 : UNIAXIAL LOAD 1 PROBLEM-1 1 m P A composite A-36 steel bar shown in the figure has 2 segments,

 2005 Pearson Education South Asia Pte Ltd TUTORIAL-1 : STRESS & STRAIN 1 PROBLEM-1 The hanger assembly is used to support a distributed loading of w=16kN/m.

Threaded Fasteners BOLTS, NUTS AND SCREWS. Threaded Fasteners Fastener is any device used to connect or join two or more parts/components. Fastener is.

CHAPTER OBJECTIVES Analyze the stress developed in thin-walled pressure vessels Review the stress analysis developed in previous chapters regarding axial.

Problem-1: A rigid coupling has a bore diameter of 50 mm. Four machined bolts on a bolt circle of 125 mm diameter and fitted in reamed holes. If the bolts.

BOLT IN FRICTION (left) The bolt preload provides a resistance to lateral movements of the flanges, by combining with friction. The max lateral force R.

Status of Activities at CERN

Hybrid Structure with Cooling John Cozzolino LARP Collaboration Meeting Port Jefferson, NY November 4-6, 2009.

56 MHz SRF Cavity Cryostat support system and Shielding C. Pai

-Elastic Properties of Solids AP Physics C Mrs. Coyle.

Lecture # 21 This chapter serves as a review of the stress analysis that has been developed in the previous chapters regarding axial load, torsion, bending.

COMBINED LOADING.  Analyze the stress developed in thin-walled pressure vessels  Review the stress analysis developed in previous chapters regarding.

1/61/6 M.Chrzanowski: Strength of Materials SM1-08: Continuum Mechanics: Stress distribution CONTINUUM MECHANICS (STRESS DISTRIBUTION)

S. Lassiter, P. Brindza, M. Fowler, E. Sun - Jefferson Lab G. Markham - NovaTech, B. Wands - Fermi Lab Abstract—Jefferson Laboratory is developing a set.

Luca Dassa – 23/03/ / 9 CRAB cavities meeting Stress linearization Analysis performed on the sub-model (with previous remarks) I think that in any.

UNIT-01. SIMPLE STRESSES & STRAINS Lecture Number - 06 Prof. S.C.SADDU MECHANICAL DEPARTMENT SIT LONAVALA Strength of Materials.

Week 8 Deliverables. Assisted Living Facility Visit Talked with elderly who are currently using walkers, a few who were using the same model as the one.

Design of Beam-Column Connections in Steel Moment Frames

ME 307 Machine Design I ME 307 Machine Design I. ME 307 Machine Design I ME 307 Machine Design I 8-1 Thread Standards and Definitions 8-2The Mechanics.

The HiLumi LHC Design Study is included in the High Luminosity LHC project and is partly funded by the European Commission within the Framework Programme.

3 Steel structures 3 Steel structures. If you have any doubts, you can check your textbook, pp

Calculations for the bolted helium vessel February 2nd 2015 Norbert Kuder, EN/MME.

Chiara Di Paolo EN-STI-TCD Material Choice for the Vacuum Window at the Exit of BTM.

PRESSURE VESSEL. 1.Determine the bursting steam pressure of a steel shell with diameter of 10 inches and made of ¼ in thick steel plate. The joint efficiency.

Muhannad Al_Waily_Machines Systems Design

Question 1 A plat that is 250 mm wide and 25 mm thick is to be reduced in a single pass in a two‑high rolling mill to a thickness of 20 mm. The roll has.

CRAB cavities Cryomodule review Tuner

Chapter 1 Stress and Strain.

Ch. 2: Fundamental of Structure

Structure I Course Code: ARCH 208 Dr. Aeid A. Abdulrazeg

BFC Structural Steel and Timber Design

Part II Design of Fasteners and Joints

Presentation transcript:

Luca Dassa – 02/03/ / 8 CRAB cavities meeting Bolt size (1) We are dealing with material where Yield strength and tensile strength are very close! We need to pay attention to the Safety Factor! Indian supplier: TorqBolt Inc.

Luca Dassa – 02/03/ / 8 CRAB cavities meeting Solution under analysisBolt size (2) Shear load for the bolts 1 V1 [N] 422 Shear load for the bolts 2 V2 [N] 422 Shear load for the bolts 3 V3 [N] 362 Normal load for the bolts 1 S1 without preload [N] 430 Normal load for the bolts 2 S2 without preload [N] 362 Normal load for the bolts 3 S3 without preload [N] 430 Normal load for the bolts 1 S1 with preload [N] 5784 Normal load for the bolts 2 S2 with preload [N] 5716 Normal load for the bolts 3 S3 with preload [N] 5784 Moment load for the bolts 1 due to V M1 [Nmm] 2111 Moment load for the bolts 2 due to V M2 [Nmm] 2111 Moment load for the bolts 3 due to V M3 [Nmm] 1811 Check preload for shear 1: OK if > 1 (at warm) 4.11 Check preload for shear 3: OK if > 1 (at warm) 4.06 Check preload for shear 3: OK if > 1 (at warm) 4.79 Max Shear load for the bolts [N] 422 Max Normal load with preload for the bolts [N] 5784 Max Moment load for the bolts due to V [Nmm] 2111 Shear stress for the bolts 1 τ1 [MPa] 26.2 Shear stress for the bolts 2 τ2 [MPa] 26.2 Shear stress for the bolts 3 τ3 [MPa] 22.5 Normal stress for the bolts 1 σ1 [MPa] 26.7 Normal stress for the bolts 2 σ2 [MPa] 22.5 Normal stress for the bolts 3 σ3 [MPa] 26.7 Bending stress for the bolts 1 σb1 [MPa] Bending stress for the bolts 2 σb2 [MPa] Bending stress for the bolts 3 σb3 [MPa] Prestress σ0 [MPa] 332 Stress due to thermal contractio σth [MPa] 24.2 Combined stress σr1 [MPa] 585 Combined stress σr2 [MPa] 581 Combined stress σr3 [MPa] 556 Safety factor η Safety factor η Safety factor η Bolt Material Titanium gr. 5 Pitch p [mm] 1 Nominal diameter d [mm] 6 "Core" Bolt diameter d3 [mm] Outgassing hole diameter d [mm] 1.5 Bolt lenght L [mm] 10 Bolt length of the wolking thread Ld [mm] 9 Tensile stress area At [mm2] Inertia of the Tensile stress area It [mm^4] Corresponding bolt diameter in ANSYS d1 [mm] 4.53 Pretension constant K 0.4 Titanium gr 5 proof stress Sp [MPa] 830 Titanium gr. 5 Young's modulus E [MPa] Preload F [N] 5354 Pressure Pr [MPa] 0.18 Coefficient of static friction μ [-] 0.3

Luca Dassa – 02/03/ / 8 CRAB cavities meeting Bolt size (3) COMMENTS (2): We decrease the preload in order to not stress too much the bolts If the shear load is higher than the allowed one, we have a rigid body motion in the vessel between plates (stopped when the bolts touch the hole) If this happens, all the shear load is transferred on the weld seams COMMENTS (1): Previous analyses have been preformed with friction coefficient equal to 0.3 If I decrease the friction coefficient to 0.1, I need to increase the preload in order to have a SF(shear)=1.5 but I reduce the SF(bolts) COMMENTS (3) about Stainless steel bolts The huge stress due to differential thermal contraction decreases the SF(bolts). We need to further reduce the preload (down to 20%) in order to gain SF(bolts)=1.5 Stress due to thermal contractio σth [MPa] 284.7

Luca Dassa – 02/03/ / 8 CRAB cavities meeting Load cases QUESTION: When should I add the pre-tuning effect? Others QUESTION: Visit to Saclay (cryomodule assembly)?