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Luleå University of Technology
1. Hällman, Emil. Provning och modellering av genomslagsgummin implementerat för dynamisk simulering i MBS.
Degree: 2014, Luleå University of Technology
URL: http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-45720
Bump stops are components used in the truck chassis for the wheel suspension and cab suspension. Their main purpose is to reduce the impact between e.g. front axle and frame when the suspension bottoms. In these situations, the bump stop undergoes compressions with large deformations and high velocities. The dynamics of these components are difficult to describe since the material characteristics for rubber are highly non-linear.The simulation models that are available for the MBS software Adams are highly simplified and do not describe these events in a satisfactory manner. Hence the goal for this thesis work was to develop a simulation model for bump stops based on the results from dynamic testing. The simulation model uses the variables displacement and velocity to calculate the force being transferred through the bump stop. Four different bump stops were subjected to quasi-static and dynamic loading while the force and displacement were measured. The experiments were carried out in a hydraulic press and a test rig designed for this purpose where several weights were dropped onto the bump stop from different heights.A simulation model consisting of an elastic and a visco-elastic force response along with a rate-independent friction model was derived based on the experimental data. The model includes 14 parameters that can be identified through quasi-static and dynamic measurements of the particular component.A subroutine was written in order to implement the proposed model in Adams and a virtual model of the test rig was created. A number of dynamic simulations were performed in order to verify the model by comparing the results to experimental data.A FE-analysis was carried out on two of the tested bump stops and it was found that some of the bump stop characteristics could possibly be obtained without performing any experiments on physical components.
Validerat; 20140526 (global_studentproject_submitter)
Subjects/Keywords: Technology; Teknik; Dynamik; genomslagsgummi; gummi; MBS; stelkroppsdynamik; Adams; fordonsdynamik
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APA (6th Edition):
Hällman, E. (2014). Provning och modellering av genomslagsgummin implementerat för dynamisk simulering i MBS. (Thesis). Luleå University of Technology. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-45720
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Hällman, Emil. “Provning och modellering av genomslagsgummin implementerat för dynamisk simulering i MBS.” 2014. Thesis, Luleå University of Technology. Accessed April 12, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-45720.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Hällman, Emil. “Provning och modellering av genomslagsgummin implementerat för dynamisk simulering i MBS.” 2014. Web. 12 Apr 2021.
Vancouver:
Hällman E. Provning och modellering av genomslagsgummin implementerat för dynamisk simulering i MBS. [Internet] [Thesis]. Luleå University of Technology; 2014. [cited 2021 Apr 12]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-45720.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Hällman E. Provning och modellering av genomslagsgummin implementerat för dynamisk simulering i MBS. [Thesis]. Luleå University of Technology; 2014. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-45720
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
2. Karlsson, Philip. Tillämpning och Visualisering av Kvaternioner .
Degree: Chalmers tekniska högskola / Institutionen för matematiska vetenskaper, 2020, Chalmers University of Technology
URL: http://hdl.handle.net/20.500.12380/301121
Subjects/Keywords: Kvaternion; Kvatternionram; Gaussavbildning; Rotation; Orientering; Stelkroppsdynamik; Visualisering, Bält-tricket; Bolltricket.
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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager
APA (6th Edition):
Karlsson, P. (2020). Tillämpning och Visualisering av Kvaternioner . (Thesis). Chalmers University of Technology. Retrieved from http://hdl.handle.net/20.500.12380/301121
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Karlsson, Philip. “Tillämpning och Visualisering av Kvaternioner .” 2020. Thesis, Chalmers University of Technology. Accessed April 12, 2021. http://hdl.handle.net/20.500.12380/301121.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Karlsson, Philip. “Tillämpning och Visualisering av Kvaternioner .” 2020. Web. 12 Apr 2021.
Vancouver:
Karlsson P. Tillämpning och Visualisering av Kvaternioner . [Internet] [Thesis]. Chalmers University of Technology; 2020. [cited 2021 Apr 12]. Available from: http://hdl.handle.net/20.500.12380/301121.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Karlsson P. Tillämpning och Visualisering av Kvaternioner . [Thesis]. Chalmers University of Technology; 2020. Available from: http://hdl.handle.net/20.500.12380/301121
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
KTH
3. Bagge, Joar. Numerical simulation of an inertial spheroidal particle in Stokes flow.
Degree: NA, 2015, KTH
URL: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-180290
Particle suspensions occur in many situations in nature and industry. In this master’s thesis, the motion of a single rigid spheroidal particle immersed in Stokes flow is studied numerically using a boundary integral method and a new specialized quadrature method known as quadrature by expansion (QBX). This method allows the spheroid to be massless or inertial, and placed in any kind of underlying Stokesian flow. A parameter study of the QBX method is presented, together with validation cases for spheroids in linear shear flow and quadratic flow. The QBX method is able to compute the force and torque on the spheroid as well as the resulting rigid body motion with small errors in a short time, typically less than one second per time step on a regular desktop computer. Novel results are presented for the motion of an inertial spheroid in quadratic flow, where in contrast to linear shear flow the shear rate is not constant. It is found that particle inertia induces a translational drift towards regions in the fluid with higher shear rate.
Partikelsuspensioner förekommer i många sammanhang i naturen och industrin. I denna masteruppsats studeras rörelsen hos en enstaka stel sfäroidisk partikel i Stokesflöde numeriskt med hjälp av en randintegralmetod och en ny specialiserad kvadraturmetod som kallas quadrature by expansion (QBX). Metoden fungerar för masslösa eller tröga sfäroider, som kan placeras i ett godtyckligt underliggande Stokesflöde. En parameterstudie av QBX-metoden presenteras, tillsammans med valideringsfall för sfäroider i linjärt skjuvflöde och kvadratiskt flöde. QBX-metoden kan beräkna kraften och momentet på sfäroiden samt den resulterande stelkroppsrörelsen med små fel på kort tid, typiskt mindre än en sekund per tidssteg på en vanlig persondator. Nya resultat presenteras för rörelsen hos en trög sfäroid i kvadratiskt flöde, där skjuvningen till skillnad från linjärt skjuvflöde inte är konstant. Det visar sig att partikeltröghet medför en drift i sidled mot områden i fluiden med högre skjuvning.
Subjects/Keywords: Fluid mechanics; Stokes flow; rigid body dynamics; spheroidal particles; inertia; integral equations; boundary integrals; double layer potentials; quadrature by expansion; Jeffery orbits; linear shear flow; quadratic flow; paraboloidal flow; Strömningsmekanik; Stokesflöde; stelkroppsdynamik; sfäroidiska partiklar; tröghet; integralekvationer; randintegraler; dubbellagerpotentialer; quadrature by expansion; Jeffery-banor; linjärt skjuvflöde; kvadratiskt flöde; paraboloidiskt flöde
Record Details
Similar Records
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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager
APA (6th Edition):
Bagge, J. (2015). Numerical simulation of an inertial spheroidal particle in Stokes flow. (Thesis). KTH. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-180290
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Bagge, Joar. “Numerical simulation of an inertial spheroidal particle in Stokes flow.” 2015. Thesis, KTH. Accessed April 12, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-180290.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Bagge, Joar. “Numerical simulation of an inertial spheroidal particle in Stokes flow.” 2015. Web. 12 Apr 2021.
Vancouver:
Bagge J. Numerical simulation of an inertial spheroidal particle in Stokes flow. [Internet] [Thesis]. KTH; 2015. [cited 2021 Apr 12]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-180290.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Bagge J. Numerical simulation of an inertial spheroidal particle in Stokes flow. [Thesis]. KTH; 2015. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-180290
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation