Sökning: "Shock Response Spectrum"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden Shock Response Spectrum.

1. 1. Simulation of Mechanical Shock with Finite Element Analysis and Estimation of Shock Attenuation

   Master-uppsats, KTH/Hållfasthetslära

   Författare :Cheng Qian; [2021]
   Nyckelord :shock; SRS; FEA; attenuation; chock; SRS; FEA; chockdämpning;

   Sammanfattning : Space equipment is often subjected to mechanical shocks. Some devices like electronics are sensitive to shocks, and they can easily be damaged. To protect these devices, it is important to study shock penetrations in space structures. The Finite Element Method is an effective tool to simulate response to transient excitations. LÄS MER

3. 2. Oxytocin, en endogen neuropeptid med potential att minska mortaliteten vid sepsis? : En litteraturstudie

   Kandidat-uppsats, Linnéuniversitetet/Institutionen för kemi och biomedicin (KOB)

   Författare :Evelina Gustafsson; [2021]
   Nyckelord :sepsis; oxytocin; organdysfunktion;

   Sammanfattning : Sepsis is a relatively unknown, but common, condition with high mortality. Sepsis is defined as life-threatening organ dysfunction caused by an excessive immune response in the host as a result of an infection. Sepsis can be caused by many different pathogens, giving a varying symptomatic profile and arise via many different routes of exposure. LÄS MER

4. 3. Spacecraft dynamic analysis and correlation with test results : Shock environment analysis of LISA Pathfinder at VESTA test bed

   Master-uppsats, Luleå tekniska universitet/Rymdteknik

   Författare :Beata Iwona Kunicka; [2017]
   Nyckelord :FEA FEM; finite element analysis; finite element method; mechanical analysis; structural analysis; dynamic analysis; computational dynamic analysis of structures; shock analysis; shock environment; shock test; shock test campaign; spacecraft dynamic analysis; MSC Nastran; MSC Patran; Dynaworks; Shock Response Spectrum; SRS; space engineering; space science and technology; mechanical engineering; structural engineering; analysis optimisation; analysis parametrisation; mechanical wave propagation; shock propagation; damping; hysteretic damping; viscous damping; structural damping;

   Sammanfattning : The particular study case in this thesis is the shock test performed on the LISA Pathfinder satellite conducted in a laboratory environment on a dedicated test bed: Vega Shock Test Apparatus (VESTA). This test is considered fully representative to study shock levels produced by fairing jettisoning event at Vega Launcher Vehicle, which induces high shock loads towards the satellite. LÄS MER

5. 4. Concentrations of inflammatory markers and clinical findings in bitches surgically treated for pyometra in Khon Kaen, Thailand

   Master-uppsats, SLU/Dept. of Clinical Sciences

   Författare :Anna Ahlén; [2017]
   Nyckelord :albumin; iron; C-reactive protein; pyometra; biomarkers; SIRS; sepsis;

   Sammanfattning : Pyometra is a common reproductive disease affecting intact bitches. The disease is defined by accumulation of purulent material within the uterus, and can potentially be life-threatening. Clinically, affected bitches can present with a variety of signs and diagnosis can be challenging in more indistinct cases. LÄS MER

7. 5. Stress simulation of the SEAM CubeSat structure during launch.

   Magister-uppsats, KTH/Hållfasthetslära (Inst.)

   Författare :Julie Fagerudd; [2015]
   Nyckelord :;

   Sammanfattning : A spacecraft is subjected to dynamic and static loads during launch. These loads are deterministic and of random nature and cannot be tested under the real conditions due to cost considerations. LÄS MER