In this paper, the material of the impeller employs the HT200, and the material properties is shown as follow: density p = 7800 kg/[m.sup.3], Poisson ratio [mu] = 0.25, elastic modulus E = 122 GPa and the allowable stress
[[sigma]] =80 MPa.
Rearranging the equations above shows how allowable stress
and crack size changes with different KIC values.
MATERIAL CARBON STEEL POLYETHYLENE (HDPE) Modulus of 27.9 x [10.sup.6] psi 2.8 x [10.sup Elasticity (E) .6] psi Poison's Ratio (v) 0.3 0.4 to 0.45 Pipe Roughness 0.00015 ft 0.000005 ft Value (e) Coefficient of 6.5 x [10.sup.-6] in/ 67 x [10.sup.-6] Thermal in x [degrees]F in x [degrees]F Expansion Thermal 25 Btu/hft x [degrees]F 0.26 Btu/h x ft Conductivity (K) x [degrees]F Allowable Stress
15,000 psi 350 psi TABLE 2 HDPE pipe pressure rating for water at 80[degrees]F.
Working stress [sigma] = 633.9 N/[mm.sup.2] ; Allowable stress
= 550 N/[mm.sup.2] Working stress > Allowable stress
Our design is not safe.
After calculating the level of security of the structure which is 8.57, I carefully selected the required degree certainlity which is 3, the inclusion in the above formula have been given to maximum stress [sigma] construction during the test is 42 N/[mm.sup.2], and it is not greater than the allowable stress
[sigma] which is 120 N/[mm.sup.2].
Because of the stress with ANSYS finite element calculation results is a comprehensive and integrated elastic stress, elastic stress distribution of the location, status, the causes have different allowable stress
of autoclave in different parts, and because there is no beyond the yield limit of the elastic stress, so in accordance with the JB4732 is required to evaluate the strength of autoclave based on stress classification on linearization.
A given set of discrete value is expressed by [R.sup.d] and in this paper objective function is taken asWT (A) = [[summation].sup.m.sub.i=1] [[rho].sub.i][l.sup.i][A.sub.i] and constraint are chosen to be stress of structures as follows [[sigma].sub.i] (A) [??][[sigma].sub.i] with allowable tolerance [[sigma].sup.0.sub.i] for i = 1,2, ..., m where [[rho].sub.i] and [l.sub.i] are weight of unit volume and length of ith element respectively, m is the number of structural element, [[sigma].sub.i] and [[sigma].sup.0.sub.i] are the ith stress, allowable stress
of geotextile for reinforcement construction planning is defined as the ultimate tensile strength of age appropriate construction plan divided by the reduction factor is taken into account.
Bartlett Quimby (2008), the American Institute of Steel Construction stopped updating Allowable Stress
Design, which was basis for steel analysis in the first edition of Structural Design for the Stage, after the ninth edition of the Steel Construction Manual (SCM).
Similar to the function that Section II of the Boiler and Pressure Vessel Code serves for metallic materials, ASME NM-3 will provide a repository for allowable stress
values and physical properties of non-metallic materials.
The maximum allowable stress
is 25 ksi tensile and compression members equal.
Span tables and design values have been updated to comply with the 2012 National Design Specification issued by the American Wood Council, and loads have been updated to reflect changes in the latest edition of ASCE/SEI 37, "Design Loads on Structures During Construction." New formwork examples include the use of allowable stress
design, as well as load and resistance factor design.