Sökning: "Springback"

Visar resultat 1 - 5 av 11 uppsatser innehållade ordet Springback.

  1. 1. Exploring the Possibilities of Sheet Metal Forming Via Plastic-Based Additive Manufacturing Moulding

    Master-uppsats, KTH/Produktionsutveckling

    Författare :Jemal Idris Ismail; Kafeel Olanrewaju Sanni; [2023]
    Nyckelord :: Sheet metal formation; Additive manufacturing; mass customization; personalized production; die design; die system; FDM; DOE; FEA; product development; automotive; sustainability; cost effective; metal dies; plastic dies.; Plåtformning; Additiv tillverkning; massanpassning; personlig produktion; formdesign; formsystem; FDM; DOE; FEA; produktutveckling; fordonsindustri; hållbarhet; kostnadseffektiv; metallformar; plastformar.;

    Sammanfattning : Additive Manufacturing (AM) has freeform fabrication capabilities of complex geometries directly from feedstock material. This can potentially enhance the efficient use of material and the cost effectiveness. It also offers design flexibility, and it is versatile. LÄS MER

  3. 2. Simulation of GPHE diagonal based on full material history

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Institutionen för byggvetenskaper; Lunds universitet/Hållfasthetslära

    Författare :Anna Gunnarsson; Jenny Hoang; [2021]
    Nyckelord :Technology and Engineering;

    Sammanfattning : The objectives for this thesis is to further develop a finite element analysis methodology where the material history is evaluated in every step. The processing of the plate from coil to fully formed plate mounted in a heat exchanger should be taken into consideration. Material phenomena such as necking and springback are important to capture. LÄS MER

  4. 3. Material Transfer Mechanisms during Interaction of Aluminium Alloy and Tool Steel at Elevated Temperatures

    Master-uppsats, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Författare :Gabriel Macêdo; [2020]
    Nyckelord :material transfer mechanisms; high temperature tribology; hot metal forming tribology; hot-stamping of aluminium alloys; aluminium alloys;

    Sammanfattning : Hot stamping of aluminium alloys allows for increased formability, decreased springback and the possibility of integrating age-hardening heat treatments into the process. However, it can be challenging due to the occurrence of material transfer of aluminium onto the tool, as aluminium is prone to adhesion even at low temperatures. LÄS MER

  5. 4. Virtual testing of self-piercing rivet connections

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Författare :Daniel Andersson; Fredrik Saliba; [2020]
    Nyckelord :FEM; SPR; self-piercing rivets; self piercing rivets; LS-dyna; Explicit FEM; lap-shear; cross-tension; KS2; r-adaptivity; 2D axisymmetric; axisymmetric;

    Sammanfattning : The automotive industry is currently trying to replace the conventional steels to lightweight materials such as aluminum or carbon fiber to meet all stricter emission targets. When using such materials, traditional joining methods, such as spot welds, could be difficult to use. Therefore, more focus has been put on self-piercing rivets (SPR). LÄS MER

  7. 5. Wear mark evolution and numerical study of impact stresses in stainless steel flapper valves

    Master-uppsats, KTH/Materialvetenskap

    Författare :Jesper Larsson; [2016]
    Nyckelord :Flapper valve; FEM; Impact fatigue; Wear mark;

    Sammanfattning : Compressors that are used in refrigerators and air conditioners usually have flapper vales made of martensitic stainless steel to control the flow of the refrigerant in the system. During service the flapper valves are affected by both bending and impact fatigue in the very high cycle fatigue (VHCF) range with billions of cycles until failure. LÄS MER