# Mechanics of Solids 2011 Part 8

## Tham khảo tài liệu 'mechanics of solids 2011 part 8', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 1-98 Section 1 Gage Sensitivities and Gage Factor The electrical-resistance strain gage has a sensitivity to both axial and transverse strain. The magnitude of the transverse strain transmitted to the grid depends on a number of factors including the thickness and elastic modulus of the adhesive the carrier material the grid material and the width-to-thickness ratio of the axial segments of the grid. Sometimes it is necessary to calculate the true value of strain that includes all contributions from c_ _ R R 1 - vK a Sg 1 Kte K where a is the normal strain along the axial direction of the gage t is the normal strain along the transverse direction of the gage V0 is Poisson s ratio for the calibration beam and Kt is the transverse-sensitivity factor of the gage. The strain gage sensitivity factor Sg is a calibration constant provided by the manufacturer. By using Equations and the percent error involved in neglecting the transverse sensitivity can be calculated. These errors can be significant for large values of both Kt and t a so it may be necessary to correct for the transverse sensitivity of the gage Figure . FIGURE Error as a function of transverse-sensitivity factor with the biaxial strain ratio as a parameter. Strain Analysis Methods Electrical-resistance strain gages are normally employed on the free surface of a specimen to establish the stress at a particular point on this surface. In general it is necessary to measure three strains at a point to completely define either the stress or the strain field. For this general case where nothing is known about the stress field or its directions before experimental analysis three-element rosettes are required to establish the stress field. This is accomplished by using the three-element gage with orientations at arbitrary angles as shown in Figure . Using this setup the strains x e and gxy can be determined. These values can be used to determine the principal strains .

TÀI LIỆU LIÊN QUAN
21    182    0
5    441    23
4    211    16
5    325    17
51    146    0
41    214    10
124    131    7
47    187    3
118    317    30
100    298    12
TÀI LIỆU XEM NHIỀU
13    26906    1220
3    17753    186
25    15659    3315
20    14374    1338
14    12012    2257
37    11490    2655
16    11301    1729
8    8951    1696
23    8433    290
3    8298    163
TỪ KHÓA LIÊN QUAN
TÀI LIỆU MỚI ĐĂNG
19    27    1    30-11-2021
136    21    1    30-11-2021
124    28    2    30-11-2021
1    26    1    30-11-2021
89    42    1    30-11-2021
64    7    1    30-11-2021
5    5    1    30-11-2021
13    14    1    30-11-2021
78    27    1    30-11-2021
130    21    1    30-11-2021
7    5    1    30-11-2021
38    7    1    30-11-2021
13    40    3    30-11-2021
95    18    1    30-11-2021
91    5    1    30-11-2021
26    26    1    30-11-2021
5    21    1    30-11-2021
9    22    3    30-11-2021
15    12    1    30-11-2021
54    33    2    30-11-2021
TÀI LIỆU HOT
3    17753    186
13    26906    1220
3    1132    72
580    3221    307
584    1604    63
62    3773    1
171    3372    567
2    1420    68
51    1885    123
53    2591    110
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