12.07.2015 Views

Untitled

Untitled

Untitled

SHOW MORE
SHOW LESS
  • No tags were found...

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

1.9 Lihtsustused varda paindeteoorias 43a)dxb)dxzz, wϕdsdϕz = f(x)xz + dzϕ + dϕ1ρ = −−w ψw’ = −ϕw = f(x)z, wdϕxw + dwJoonis 1.11. Joone kõverusElastse joone element dsds = ρdφ,1ρ= ψ =dφds(1.15)siindφds = d (arctan z′ ) dxdx ds = z ′′ dx1 + (z ′ ) 2 (1.16)dx√︁1 + (z ′ ) 2Joone kõverus ψ jψ j = 1 ρ = dφds = z ′′[︁1 + (z′ ) 2]︁ 3 2(1.17)siin on ρ joone kõverusraadius. Teeme lihtsustused:∙ lihtsustus tan φ ≈ φ, millest järeldub1ρ = dφds = z√︁1 ′′(1.18)+ (z ′ ) 2lI järku teooriaII järku teooria∆ lJoonis 1.12. Tala deformatsioon

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!