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An­ge­bot 219 von 311 vom 27.06.2018, 15:00

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Tech­ni­sche Uni­ver­sität Ber­lin - Fac­ulty VI - Insti­tute of Civil Engin­eer­ing / Struc­tural Engin­eer­ing and Soil Mech­an­ics

Research Assist­ant - salary grade E13 TV-L Ber­liner Hoch­schu­len

part-time employ­ment may be pos­sible

Work­ing field:

Research work, par­tic­u­larly in the con­text of the DFG (Ger­man Research Found­a­tion) - NSFC (National Nat­ural Sci­ence Found­a­tion of China) pro­ject "Sys­tem dynamic beha­vior of high-speed rail­way infra­struc­ture on mul­tilayered soils con­sid­er­ing soil non­lin­ear­it­ies". Object­ives of the pro­ject are the numer­ical sim­u­la­tion of mod­els for pro­gnosis of the dynamic beha­vior of high-speed infra­struc­tures on multi-layered soils and their val­id­a­tion based on in-situ meas­ure­ments. In this con­text, a com­plex the­or­et­ical and numer­ical model will be developed which will take into account the train-track-soil inter­ac­tion and will be able to study the dynamic beha­vior of the high-speed rail­way infra­struc­ture and the under­ly­ing strat­i­fied sub­soil con­sid­er­ing the non-lin­ear beha­vior of the soil.
The finite ele­ment method (FEM) will be applied for the numer­ical sim­u­la­tion of the dynamic beha­vior of the rail­way infra­struc­ture and the sur­round­ing sub­soil. In addi­tion, mater­ial laws describ­ing the non­lin­ear soil beha­vior under high-speed rail traffic will be imple­men­ted in the FEM. Spe­cial ele­ments will be inser­ted on the edge nodes of the FEM mesh in order to absorb the out­go­ing waves at the arti­fi­cial bound­ar­ies of the model.

Par­tic­u­lar tasks are:
  • Devel­op­ment of numer­ical mod­els and sim­u­la­tion of the dynamic beha­vior of the high-speed rail­way infra­struc­ture and the under­ly­ing strat­i­fied sub­soil. The fol­low­ing aspects of the prob­lem should be invest­ig­ated: i) non-lin­ear mater­ial beha­vior of the soft soil lay­ers under high-speed rail traffic and ii) the res­on­ance beha­vior of the rail­way infra­struc­ture by a train trav­el­ing with a crit­ical speed.
  • Veri­fic­a­tion and val­id­a­tion of the com­pu­ta­tional model, par­tic­u­larly by using the in-situ tests car­ried out within the con­text of the pro­ject.
  • Doc­u­ment­a­tion of the research work, present­a­tion and pub­lic­a­tion of the research res­ults in sci­entific journ­als and con­fer­ence pro­ceed­ings.

Require­ments:

  • Suc­cess­fully com­pleted uni­versity degree (Mas­ter, Dip­lom or equi­val­ent) in Civil Engin­eer­ing, Mech­an­ical Engin­eer­ing, or related field.
  • Pro­found know­ledge in the field of soil mech­an­ics, engin­eer­ing mech­an­ics, and numer­ical meth­ods for ini­tial and bound­ary value prob­lems, par­tic­u­larly the finite ele­ment method (FEM) is required.
  • The can­did­ate must pos­sess flu­ent Ger­man lan­guage skills and excel­lent Eng­lish lan­guage skills, both writ­ten and spoken and is expec­ted to write sci­entific pub­lic­a­tions in both Ger­man and Eng­lish and to present the res­ults of the research on national and inter­na­tional con­fer­ences.
  • Ideally: know­ledge in the field of soil dynam­ics and the the­ory of wave propaga­tion, con­stitutive the­ory and mater­ial mod­el­ing, non­lin­ear FEM and numer­ical meth­ods for dynamic prob­lems.
  • Ideally: pro­gram­ming skills in Mat­lab/For­tran or other lan­guages and know­ledge con­cern­ing the imple­ment­a­tion of FEM algorithms.

How to ap­ply:

Please send your writ­ten applic­a­tion with the ref­er­ence num­ber and the usual doc­u­ments to Tech­nis­che Uni­versität Ber­lin - Der Präsid­ent - Fakultät VI, Institut für Bauingenieurwesen, FG Grundbau und Bodenmechanik, Prof. Dr. Rackwitz, Sekr. TIB1-B7, Gustav-Meyer-Allee 25, 13355 Berlin or by e-mail to frank.rackwitz@tu-berlin.de.

To ensure equal oppor­tu­nit­ies bet­ween women and men, app­li­ca­ti­ons by women with the requi­red qua­li­fi­ca­ti­ons are expli­citly desi­red.
Qua­li­fied indi­vi­du­als with disa­bi­li­ties will be favo­red. The TU Berlin values the diversity of its members and is committed to the goals of equal opportunities.

Please send cop­ies only. Ori­gi­nal docu­ments will not be retur­ned.